Accumulator Technology. Product Catalogue. - Sea

AccumulatorTechnology.Product Catalogue.E 30.000.1/03.12

1. HYDAC ACCUMULATOR TECHNOLOGYFLUID ENGINEERING EFFICIENCY THROUGH ENERGY MANAGEMENT.HYDAC Accumulator Technology has over45 years' experience in research &development, design and production ofHydac accumulators.Bladder, piston, diaphragm and metalbellows accumulators from HYDACtogether form an unbeatable range and ascomponents or units, support hydraulicsystems in almost all sectors.The main applications of our accumulatorsare:• zEnergy storage,• zEmergency and safety functions,• zDamping of vibrations, fluctuations,pulsations (pulsation damper), shocks(shock absorber) and noise (silencer),• zSuction flow stabilisation,• zMedia separation,• zVolume and leakage oil adjustment,• zWeight equalization,• zEnergy recovery.Using accumulators improves theperformance of the whole system and indetail this has the following benefits:• zImprovement in the functions• zIncrease in service life• zReduction in operating and maintenancecosts• zReduction in pulsations and noiseOn the one hand, this means greatersafety and comfort for operator andmachine.On the other hand, HYDAC accumulatorsenable efficient working in all applications.Basic criteria, such as:• zDesign pressure,• zDesign temperature,• zFluid displacement volume,• zDischarge / Charging velocity,• zFluid,• zAcceptance specifications and also• zMounting optionsare important parameters required forsizing the correct accumulator.In addition the knowledge developed byour accumulator specialists will help toselect the right type of accumulator. Thecomprehensive range of HYDACaccessories simplifies installation andmaintenance according to thespecification.2. QUALITYQuality, safety and reliability are paramountfor all HYDAC accumulator components.They comply with the current regulations(or standards) for pressure vessels in theindividual countries of installation.In taking delivery of a HYDAC HydraulicAccumulator therefore, the customer isassured of a high-quality accumulatorproduct which can be used in everycountry in the world, depending on thecertification.For more details, please turn to Section 4.All the processes involved, fromdevelopment, engineering and productionto approval and delivery are defined byHYDAC's certified management systemand the relevant international accreditationfor the manufacture of pressure vessels.In conjunction with the customer servicedepartment at HYDAC's headquarters,service is possible worldwide.HYDAC's worldwide distributor networkmeans that trained staff are close at handto help our customers.This ensures that HYDAC customers havethe support of an experienced workforceboth before and after sale.E 3.000.12/03.122

CONTENTSPageCataloguesectionPage1. HYDAC Accumulator Technology 2 E 3.000 22. Quality 23. Safety information 44. Regulations 55. Product overview 6 – 85.1. BLADDER ACCUMULATORS5.1.1 Standard E 3.201 195.1.2 Low pressure E 3.202 275.1.3 High pressure E 3.203 355.2. PISTON ACCUMULATORS5.2.1 Standard E 3.301 395.2.2 Series SK280 E 3.303 515.3. DIAPHRAGM ACCUMULATORS E 3.100 555.4. Metal bellows accumulators E 3.304 615.5. Hydraulic dampers E 3.701 675.6. Special accumulators5.7. Accumulator stations E 3.653 855.8. Accumulator accessories5.8.1 Hydraulic accumulators with back-up nitrogen bottles E 3.553 915.8.2 Universal charging and testing unit E 3.501 975.8.3 Safety and shut-off block E 3.551 1075.8.4 Safety equipment for hydraulic accumulators E 3.552 1295.8.5 Supports for hydraulic accumulators E 3.502 1355.8.6 ACCUSET SB E 3.503 1436. Industries and applications 9 – 107. / 8. Website / Specification Forms 10 – 169. Sizing 17 – 1810. NOTE 18E 3.000.12/03.123

3. SAFETY INFORMATIONHydraulic accumulators are pressurevessels as defined in the PressureEquipment Directive 97/23/EC. They areclosed vessels which are designed andbuilt to store pressurized fluids. Hydraulicaccumulators are charged with nitrogenwhich is separated from the fluid sectionby a piston, bladder or diaphragm.Hydraulic accumulators are specificallydesigned to store and then dischargepressurized fluids.The regulations for commissioning andoperating hydraulic accumulators whichare in force at the place of installationmust be observed. The plant operatoris exclusively responsible for ensuringcompliance with these regulations.Relevant instructions are provided in theOperating Manuals for our products.As regards production and placing onthe market, HYDAC has carried out acomprehensive risk assessment.Similarly the manufacturer of productsincorporating hydraulic accumulatorsmust proceed accordingly (see PressureEquipment Directive 97/23/EC) and thefollowing principles must be adhered toand in this order of priority:• zRemoval or reduction of risks, insofar asthis is reasonably possible,• zApplication of appropriate protectivemeasures against risks which cannot beeliminated,• zIf required, training of the users onthe residual risks and instructionson appropriate special measures forreducing the risks during installation and/or operation.For safe handling and operation, theoperator must draw up a risk assessmentfor the installation site, particularly incombination with other components andrisks.The resulting measures must beimplemented accordingly.In the case of fundamental risks affectinghydraulic accumulators, e.g.• zExcessive pressure and• zIncrease in temperature(in the event of fire)we already have the relevant productsavailable.On no account must any welding, solderingor mechanical work be carried out on theaccumulator shell. After the hydraulic linehas been connected it must be completelyvented. Work on systems with hydraulicaccumulators (repairs, connectingpressure gauges etc) must only be carriedout once the pressure and the fluid havebeen released.3.1. RISK OF EXCESSIVEPRESSUREProducts:Safety and shut-off block for the fluid sidein various sizes and versions.See catalogue section:• zSafety and shut-off block SAF/DSVNo. 3.551Gas safety valve and gas safety block forthe gas sideBursting discs for gas and fluid sidesSee catalogue section:• zSafety equipment for hydraulicaccumulatorsNo. 3.5523.2. RISK OF RISE INTEMPERATUREProducts:Safety and Shut-off Block with solenoidoperatedvalve (open when de-energised)in conjunction with temperature monitoring.See catalogue section:• zSafety and shut-off block SAF/DSVNo. 3.551 or on requestTemperature fusesSee catalogue section:• zSafety equipment for hydraulicaccumulatorsNo. 3.552E 3.000.12/03.124

4. PRESSUREEQUIPMENT DIRECTIVEREGULATIONSOn 29 November 1999 the Directive97/23/EC (Pressure Equipment Directive)came into force and since 29 May 2002has been exclusively binding in Europe.This directive applies to the design,manufacture, conformity assessmentand placing on the market of pressureequipment and assemblies with amaximum permitted pressure of over0.5 bar. It guarantees the free movementof goods within the European Community.EU member states must not prohibit,restrict or obstruct the placing on themarket and the commissioning of pressureequipment on account of pressure-relatedhazards, if the equipment complieswith the requirements of the pressureequipment directive and has the CE mark,and is subject to a conformity assessment.Hydraulic accumulators with a capacity ofV ≤ 1 litre, a maximum permitted pressurePS ≤ 1000 bar and a pressure capacityPS • V ≤ 50 bar • l for gases of fluid group2 (non-hazardous fluids) are subject toArticle 3, Paragraph 3 of the EuropeanPressure Equipment Directive and do notreceive the CE mark.Inspection of the equipment andinstallation, operational safety and repeattesting are controlled as before by nationallaws.The equipment relating to safety isdescribed in AD2000, ISO 4126 andEN 14359. The repeat testing intervalsare stipulated in the new German health &safety regulations.4.1. OVERSEASPressure accumulators which are installedoverseas (outside the EU), are suppliedwith the relevant test certificates requiredin the country of installation.The country of installation must be statedat the time of ordering (see code in ModelCode for the particular product: CertificateCode).HYDAC pressure vessels can be suppliedwith virtually any test certificate. Pleasenote that the permitted operating pressurecan differ from the nominal pressure.Depending on the authority, the differentmaterial requirements must be observed.4.2. Certificate code = S(U STAMP)HYDAC Technology GmbH has hadauthorization since 1985 to use theCode Symbol "U STAMP" on pressurevessels which have been manufactured inconformity with the ASME specificationsand to market these using the "NB"symbol, in the jurisdiction (area ofapplication) of “The National Board ofBoiler and Pressure Vessel Inspectors“.4.3. CERTIFICATE CODE = P(KHK certificate)For the Japanese market, HYDACTechnology GmbH has had approval asa "Self Inspecting Manufacturer" sincethe year 2000. Consequently, HYDACis authorized to manufacture and testpressure vessels for the Japanese marketand to import them into Japan.4.4. CERTIFICATE CODE = A9(MANUFACTURERLICENSING CHINA)Since 1998 HYDAC Technology GmbH hashad approval from the Chinese authority"SELO" as a manufacturer of pressurevessels and valves. HYDAC is thereforeauthorized to import welded bladder, pistonand diaphragm accumulators, and safetyvalves, into the Chinese market.In conjunction with this approval, it isabsolutely essential to provide the detailsof the end user/dealer when placing theorder.4.4. Certificate tableThe following table lists the codes used inthe model code for different countries ofinstallation.European member states Certificatecode(AKZ)AT AustriaBE BelgiumBG BulgariaCY CyprusCZ Czech RepublicDK DenmarkEE EstoniaUFI FinlandFR FranceDE GermanyGB Great BritainGR GreeceHU Hungary U 3)IE Ireland (Republic)IT ItalyLV LatviaLT LithuaniaLU LuxembourgMT MaltaNL NetherlandsPL PolandUPT PortugalRO RomaniaSK SlovakiaSI SloveniaES SpainSE SwedenRest of the WorldCertificatecode(AKZ)DZ Algeria U 3)AR Argentina U 3)AU Australia F 1)BS Bahamas E 3)BB Barbados U 3)BY Belarus A12BM Bermuda U 3)BO Bolivia U 3)BR Brazil U 3)CE Canada S1 2)CL Chile U 3)CN China A9CR Costa Rica E 3)EC Ecuador U 3)ET Egypt U 3)HK Hong Kong A9IS Iceland U 3)IN India U 3)ID Indonesia U 3)IL Israel U 3)JP Japan PJO Jordan U 3)KR Korea (Republic) U 3)KW Kuwait U 3)LB Lebanon U 3)LY Libya U 3)MY Malaysia U 3)MX Mexico U 3)NZ New Zealand TNG Nigeria U 3)NO Norway UPK Pakistan U 3)PE Peru U 3)PH Philippines U 3)PR Puerto Rico E 3)RU Russia A6SA Saudi Arabia U 3)SG Singapore U 3)ZA South Africa U 3)SD Sudan U 3)CH Switzerland USY Syria U 3)TW Taiwan U 3)TH Thailand U 3)TN Tunisia U 3)TR Turkey UUA Ukraine A10US USA S 3)YU Yugoslavia (former) U 3)1)approval required in the individual territories2)approval required in the individual provinces3)alternative certificates possibleE 3.000.12/03.125

5. PRODUCT OVERVIEW5.1. BLADDERACCUMULATORS5.1.1 StandardNominal volumes:0.5 ... 200 lPermitted operating pressure:330 ... 550 barBenefits of HYDAC bladder accumulators:• zHigh discharge speeds,• zNo pressure differential between fluidand gas sides,• zCompact, maintenance-free,• zHigh charging and dischargefrequencies.5.1.2 Low pressureNominal volumes:2.5 ... 450 lPermitted operating pressure:up to 40 bar5.1.3 High pressureNominal volumes:1 ... 54 lPermitted operating pressure:5 ... 1000 bar5.2. PISTONACCUMULATORS5.2.1 StandardNominal volumes:up to 3300 lPermitted operating pressure:210 ... 350 bar(higher pressures on request)5.2.2 Series SK280Nominal volumes:0.16 ... 5 lPermitted operating pressure:280 barBenefits of HYDAC piston accumulators:• zMinimal pressure differential betweenthe fluid and gas sides,• zLarge usable volume,• zVariable installation position,• zMonitoring of the piston position possibleusing various systems,• zParticularly suitable for back-upconfigurations,• zHigh flow rates possible,• zNo sudden discharge of gas when sealsare worn.E 3.000.12/03.125.3. DIAPHRAGMACCUMULATORS5.3.1 Diaphragm accumulatorsWeld typeNominal volumes:0.075 ... 4 lPermitted operating pressure:50 ... 330 barScrew typeNominal volumes:0.1 ... 4 lPermitted operating pressure:210 ... 750 barBenefits of HYDAC diaphragmaccumulators:• zDesign optimised for function andweight,• zChoice of installation positions,• zNo pressure differential between fluidside and gas side,• zLow-maintenance and long service life.6

5.4. METAL BELLOWSACCUMULATORS5.4.1 Metal bellows accumulatorsfor heavy diesel enginesNominal volume:3.8 lPermitted operating pressure:50 barSeries: SM50P-...other models on requestBenefits of the HYDAC metal bellowsaccumulator:• zGas-tight• zMaintenance-free• zMedia resistance over a wide range oftemperatures5.5. HYDRAULIC DAMPERS5.5.1 DampersNominal volumes:0.075 ... 450 lPermitted operating pressure:10 ... 1000 bar5.5.2 SILENCERPermitted operating pressure:330 barAdvantages of the HYDAC hydraulicdamper:• zReduces pressure pulsations,• zImproves the suction performance ofdisplacement pumps,• zPrevents pipe breaks and damage tovalves,• zProtects measuring equipment and itsfunction in the system,• zReduces noise level in hydraulicsystems,• zReduces maintenance and servicingcosts and• zExtends service life of the system.5.6. SPECIALACCUMULATORS5.6.1 Weight ReducedHydraulic AccumulatorsOver 80% reduction in weightcompared to equivalentcarbon steel accumulators.The choice ranges from weight-optimizedaccumulators, e.g. by using aluminium,through to light-weight and ultra lightweightaccumulators.5.6.2 Spring accumulatorsThese are fitted with a spring.The energy is produced from the springforce, instead of gas.Further information on request.5.7. ACCUMULATORSTATIONSHYDAC supplies fully assembledaccumulator stations which are ready foroperation, complete with all the necessaryvalve controls, fittings and safetyequipment• zas an individual accumulator unit or• zin a back-up version with nitrogen bottlesto increase the effective volume.E 3.000.12/03.127

5.8. ACCUMULATORACCESSORIES5.8.1 Hydraulic accumulators withback-up nitrogen bottlesHYDAC also offers nitrogen bottles whichcan be used to back up bladder and pistonaccumulators. Nitrogen bottles used asback-ups increase the gas volume in theaccumulator.Using HYDAC nitrogen bottles providesthe following benefits:• zCost-effective expansion of theaccumulator volume and as a result• zSmaller accumulators for the same gasvolume.5.8.2 Universal charging and testingunit FPU-1Charging hose, pressure gauge andpressure reducer for HYDAC and othermakes of accumulator, up to 350 bar.Higher pressures on request5.8.3 Safety and shut-off blockSAF/DSVNominal size: 10 ... 50Permitted operating pressure:400 bar (DSV 350 bar)Pressure relief valve:Nominal width DN125.8.4 Safety equipment• zGas safety valve GSV6• zTemperature fuse• zBursting discBenefits of the HYDAC Safety and Shut-offBlock:• zMinimum of space and maintenance,• zMinimum of installation required(1 SAF replaces as a rule up to 10individual pipe connections),• zConsiderable reduction in installationtime,• zCan be adapted to different types andalso different makes of accumulator, and• zAdditional valves (pilot-operated checkvalves, flow control valves, etc).• zGas safety blockas safety equipment forHYDAC accumulator products.Approval according to Pressure EquipmentDirective PED and CE mark.Benefits of the HYDAC Gas safety block:• zA gas safety block simplifies theoperation of the hydraulic accumulatoron the gas-side and also provides ameans of attaching the above safetyequipment using the various ports.5.8.5 Supports for HydraulicAccumulatorsAccumulator sets, clamps and consolesfor efficient mounting of hydraulicaccumulators.5.8.5 ACCUSET SBNominal volumes:1 ... 50 lPermitted operating pressure:330 barE 3.000.12/03.128

6. INDUSTRIES andAPPLICATIONSHYDAC Technology GmbH isrepresented in almost all industriesof the world which use hydraulicaccumulators.The main sectors are industrialhydraulics, mobile technology andprocess technology.Further applications in oil & gas/offshore as well as more energyefficient systems utilizing accumulatorsare gaining in importance.Listed below is a selection of exampleswith accumulators/dampers which aretypical for these industries:6.1. INDUSTRIAL HYDRAULICSAutomotive Industry• zGeneral industrial hydraulics, e.g. energystorageMachine tools• zSupport for the hydraulics for tool drive ortool change• zEnergy storage in the compact hydraulics ofmachining centresPlastics machinery• zAccumulator stations for energy storageduring the injection moulding process• zPulsation damping on the hydraulic driveForming machines• zAccumulators used to store energy tosupport the pumpIron and steel industry• zAccumulator to maintain the pressure inrolling mills• zBlast furnace hydraulicsThermal power plants• zEmergency supply for turbine control system• zPulsation damping on pumps• zLubrication, control and seal oil supplyWind turbines• zAccumulators in the pitch control system• zSupport of the pitch drive• zAccumulators on braking unitsMining machinery• zHydraulic accumulators, e.g. in suspendedmonorails• zPulsation damping• zComfort and safety for mobile workingmachinesPaper Industry• zEnergy storage for emergency functions infriction bearing hydraulics• zEnergy storage in high/low pressure powerunitsTest rigs and test systems• zEnergy storage on crash test systems• zPulsation damping on servohydraulic axesE 3.000.12/03.129

6.2. MOBILE TECHNOLOGYAutomotive technology• zAutomatic and manual transmission• zAutomatic clutch systems• zEngine management systems• zPump noise damping• zAccumulators for turbochargeremergency lubricationConstruction Machinery• zAccumulators in braking systems• zChassis damping• zBucket damping• zBoom damping on mobile cranesAgricultural and forestry machines• zFront loader damping• zAccumulators in tractor suspensionsystems• zStone strike protection for ploughs• zBoom suspension on field sprayers6.3. PROCESS TECHNOLOGYChemical industry• zEnergy storage and pulsation damping on dosingpumps• zSuction flow stabilisation on the suction side ofpumpsLoading stations / Refineries• zShock absorption for valve closing• zPulsation damping on pipelinesOffshore / Oil & Gas• zAccumulators to support valve closing systems• zEnergy storage for deep sea rams• zBlow Out Preventers (BOP)• zEmergency function for safety systems• zAccumulators on wellhead control systemsMunicipal machines• zEnergy storage• zBoom damping• zPulsation dampers• zChassis dampingLifting and material handlingtechnology• zNoise-damping• zEnergy recovery• zBraking systemShipping• zWater treatment plants(pump support)• zPulsation damping on diesel engines• zHeave compensation (cranes)• zEmergency function for lifeboats7. WEBSITEPlease visit us at the following address:www.hydac.com.In addition to Industries, Service and Fluid Engineering,under Products » Hydraulic Accumulators, you willfind the standard product range and acomprehensive range of accessories fromHYDAC TECHNOLOGY GmbH.8. Specification formsOur aim is to provide optimum customer service bothbefore and after purchasing the accumulator.The following specification forms are designed tohelp pre-select the required accumulator/damper oraccessories.E 3.000.12/03.1210You can also download these as a pdf document fromthe intranet and internet (www.hydac.com/Hydraulicaccumulators) under the Downloads tab. You can thencomplete them at your convenience on your PC andalso send them to your HYDAC contact, e.g. by E-Mail.

HYDAC Technology GmbHIndustriegebietD-66280 Sulzbach/SaarTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comGeneral ACCUMULATOR Specification Form (Page 1/2)(Subject to technical modifications)Company:Project name:E-Mail:Location:Originator:Tel. no.:Application: Requirement: pieces/yearNote:The appropriate accumulator can be calculated using the HYDAC Accumulator Simulation Program ASP.Download from www.hydac.com.Type of accumulator ¨ Bladder accumulator ¨ Piston accumulator ¨ Diaphragm accumulator ¨ __________________Fluids/mediumFluid: Viscosity at 20 °C: cStDensity: kg/m³ Viscosity at operating temperature: cStFunctioning of the pumpAdditional details on the accumulator¨ Continuous operation ¨ Intermittent operation Industry:Accumulator dataCountry of installation:Max. operating pressure: bar Design/Certification:Min. operating pressure: bar Specification:Pre-charge pressure at 20 °C (nitrogen): bar Materials*(See catalogue section: No. 3.000, Sizing)Accumulator shell:Ambient temperature: °C Fluid connection:Operating temperature: °C Elastomer:Complete cycle time: s Additional informationFluid demand diagram for one pumpand one consumer:Installation dimensions:(height x Ø ext.)Fluid connection: Type:Accumulator discharge rate: l/min For thread ¨ internalAccumulator discharge time: s ¨ externalFlow rate of the pump: l/min Standard:Pump runs continuously: ¨ Gas connection:Pump starts after discharge:¨Colour/finish:¨ internal¨ externalSpare parts/Accessories:Alternatively:Fluid demand diagram for several pumpsand/or consumers (see Page 2)see www.hydac.comunder Products/Accumulators* dependent on operating temperature and/or fluid resistancemmComments:Date:Name:E 3.000.12/03.1211

HYDAC Technology GmbHIndustriegebietD-66280 Sulzbach/SaarTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comGeneral ACCUMULATOR Specification Form (Page 2/2)(Subject to technical modifications)Fluid demand diagram for several pumps and/or consumersDesignation / ExampleQ v= Consumer flow rate [l/s]E V= Switch-on time of consumer [s]A V= Switch-off time of consumer [s]E P= Switch-on time of pump [s]A P= Switch-off time of pump [s]Q[l/s]E V1 A V1 A V2 A V3E V2 E V3 E V4 A V4consumersQ V1Q V2Q V3Q V4time [s]E P1A P1E P2A P2pumpsPlease indicate cycle data belowNumber of consumers:Number of pumps:Q V1= E V1= A V1= Q P1= E P1= A P1=Q V2= E V2= A V2= Q P2= E P2= A P2=Q V3= E V3= A V3= Q P3= E P3= A P3=Q V4= E V4= A V4= Q P4= E P4= A P4=Q[l/s]time [s]E 3.000.12/03.1212

HYDAC Technology GmbHIndustriegebietD-66280 Sulzbach/SaarTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comShock absorber specification form (Page 1/2)(Subject to technical modifications)Company:Project name:E-Mail:Location:Originator:Tel. no.:Application: Requirement: pieces/yearNote:The appropriate accumulator can be calculated using the HYDAC Accumulator Simulation Program ASP.Download from www.hydac.com.Type of accumulator ¨ Bladder accumulator ¨ Piston accumulator ¨ Diaphragm accumulator ¨Cause of the pressure shockComments:Accumulator data¨ When pump starts ¨ When pump switches off Max. operating pressure: bar¨ When check valve flap (valve) closes Min. operating pressure: barPre-charge pressure at 20 °C (nitrogen):barFluids/mediaFluid 1) :Density:Pipeline data for a single pipeLength:Diameter (internal):Wall thickness:Material of line:Max. permitted pressure in the line:Total closing time of the valve:Speed of sound in the system:Alternatively:Pipeline data for additional sections of pipe(see Page 2)Pump dataZero head:Pressure of the pump at the operating point:Flow rate of the pump at the operating point:* dependent on operating temperature and/or fluid resistance1)please send datasheetkg/m³mmmmmbarsm/smbarl/min(See catalogue section: No. 3.000, Sizing)Ambient temperature: °COperating temperature: °CFluid connection:Gas connection:Colour/finish:Spare parts/Accessories:Materials*Accumulator shell:Fluid connection:Elastomer:Additional information on the accumulator/systemAvailable installation space:(L x W x H)Industry:Country of installation:Design/Certification:Specification:Type:For threadStandard:¨ internal¨ internal¨ external¨ externalsee www.hydac.comunder Products/Hyd. accumulatorsmDate:Name:E 3.000.12/03.1213

Pipeline data for additional sections of pipeDesignation / ExampleH = Zero head of the pump [m]D i= Internal diameter of the pipe [mm]T = Closing time of the valve [s](effectively approx. 30 % of the total closing time)L = Length of the pipeline [m]HYDAC Technology GmbHIndustriegebietD-66280 Sulzbach/SaarTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comShock absorber specification form (Page 2/2)(Subject to technical modifications)HL1L2L3TTankTankD i1 D i2 D i3No. of different pipes: 3L1 = 200 m D i1 = 100 mmL2 = 50 m D i2 = 200 mmL3 = 20 m D i3 = 500 mmTypical values for speed of soundWater = 1200 m/sFuel = 1100 m/sPlease complete below with the pipeline dataNo. of different pipes:L1 = m D i1 = mm L5 = m D i5 = mmL2 = m D i2 = mm L6 = m D i6 = mmL3 = m D i3 = mm L7 = m D i7 = mmL4 = m D i4 = mm L8 = m D i8 = mmE 3.000.12/03.1214

HYDAC Technology GmbHIndustriegebietD-66280 Sulzbach/SaarTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comPULSATION DAMPER Specification Form(Subject to technical modifications)Company:Project name:E-Mail:Location:Originator:Tel. no.:Application: Requirement: pieces/yearNote:The appropriate accumulator can be calculated using the HYDAC Accumulator Simulation Program ASP.Download from www.hydac.com.Type of accumulator ¨ Bladder accumulator ¨ Piston accumulator ¨ Diaphragm accumulator ¨Fluids/mediumFluid: Viscosity at 20 °C: cStDensity: kg/m³ Viscosity at operating temperature: cStPump and system dataOper. press./pump pressure:Flow rate:Rpm:No. of displacements:Pump factor:Stroke volume:Comments:¨ singlefor piston pumps: V H=¨ double actingoptional (if available)d 2 x p x H x 1064barl/min1/min1 dm³d = Ø piston:mm Additional informationResult: l gas volume 2) Colour/finish:H = stroke length:mm Installation dimensions:for diaphragm pumps: see manufacturer's specifications(Height x Ø ext.)Accumulator dataFluid connection:Pre-charge pressure 1) : barOperating temperature: °CApplication:¨ pressure side ¨ suction sideRequired residual pulsation: % Gas connection:* dependent on operating temperature and/or fluid resistance1)see catalogue section: No. 3.000, Sizing2)normally pre-charged with nitrogen (N 2)Additional details on the accumulatorIndustry:Country of installation:Design/Certification:Specification:Design pressure: barDesign temperature: °CMaterials*Accumulator shell:Fluid connection:Elastomer:Spare parts/Accessories:Type:For threadStandard:¨ internal¨ internal¨ externalmm¨ externalsee www.hydac.comunder Products/Hydraulic accumulatorsDate:Name:E 3.000.12/03.1215

Company:Project name:E-Mail:HYDAC Technology GmbHIndustriegebietD-66280 Sulzbach/SaarTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comSILENCER Specification Form(Subject to technical modifications)Location:Originator:Tel. no.:Application: Requirement: pieces/yearSizing example:E00E1E21 Silencer 2 3E44E35E5E66Pump: A10VSO71 Design pressure: 210 bar Silencer inlet: SAE 1 1/4“ 3000 PSIPump rpm: 1500 1/min No. of pump pistons: 9 Silencer outlet: SAE 1 1/4“ 3000 PSIFluid: Aral Vitam GF Fluid density: 890 kg/m³ Design temperature: 50 °CElement no. Length [m] Ø int. [m] Ø ext. [m] Subsequent connection type Hose typeE1 0.5 0.020 0.030 Straight connection –E2 0.4 – 0.200 Straight connection –E3 1.5 0.025 0.040 T-junction 4SP (DIN EN 856)E4 0.6 0.015 0.025 Pressure relief valve –E5 0.2 0.015 0.025 Right-angle –E6 0.6 0.015 0.025 Shut-off valve –Design data:Pump: Design pressure: bar Silencer inlet:Pump rpm: 1/min No. of pump pistons: Silencer outlet:Fluid: Fluid density: Design temperature: °CElement no. Length [m] Ø int. [m] Ø ext. [m] Subsequent connection type Hose typeE1E2E3E4E5E6E7E8E9E10E11E12Comments:E 3.000.12/03.12Date:Name:16

9. SIZING9.1. DEFINITION OF VARIABLES FOR SIZING A HYDRAULIC ACCUMULATORFunction principle Accumulator cycle Limits for the gas pre-charge pressureBladder accumulatorp 0≤ 0.9 • p 1with a permitted pressure ratio ofp 2: p 0≤ 4 : 1 Piston accumulator Diaphragm accumulator The accumulator is pre-charged withnitrogen. The separating element(piston, bladder, diaphragm) shuts offthe fluid connection. The minimum operating pressure shouldbe higher than the gas pre-chargepressure. This should prevent theseparating element from striking thefluid connection every time fluid isdischarged. Once the max. operating pressure isreached, the effective volume ΔV isavailable in the accumulator:p 0= Gas pre-charge pressurep 1= Minimum operating pressurep 2= Maximum operating pressureV 0= Effective gas volumeV 1= Gas volume at p 1V 2= Gas volume at p 2t 0= Gas pre-charge temperaturet min= Min. operating temperaturet max= Max. operating temperatureFor HYDAC low pressure accumulators,the following must also be taken intoaccount:Type SB40: p 0 max= 20 barType SB35H: p 0 max= 10 barp 0,tmin≥ 2 bar (piston type 2)p 0,tmin≥ 10 bar (piston type 1)p 0,tmin≤ p 1- 5 barIn extreme cases, during slow charging(isothermal) and rapid discharge (adiabatic)of the effective volume, and after accuratecalculation, the gas pre-charge pressurep 0≥ p 1can be selected.Accumulator supplied uncharged orwith 2 bar storage pressure.a) Permitted pressure ratio: p 2: p 0Weld type:The pressure ratio of weld-typediaphragm accumulators is between4 : 1 and 8 : 1, depending on the design,see catalogue sectionDiaphragm Accumulators, No. 3.100,Point 3.1.Screw type:All sizes: 10 : 1Other pressure ratios on requestb) p 0≤ 0.9 • p 19.2. SELECTION OFGAS PRE-CHARGEPRESSUREThe selection of the gas pre-chargepressure defines the accumulator capacity.In order to obtain optimum utilization of theaccumulator volume the following gas prechargepressures are recommended:9.2.1 Recommended valuesfor energy storage:p 0,t max= 0.9 • p 1for shock absorption:p 0,t max= 0.6 to 0.9 • p m(p m= average operating pressure forfree flow)During operation the separating element(piston, bladder, diaphragm) must nottouch the fluid-side connection.Since the volume of the gas increases asthe temperature increases, the gas prechargepressure must be determined at themaximum operating temperature using therecommended values.9.2.2 Limits for gas pre-chargepressure(see right-hand column of table)9.2.3 Temperature effectSo that the recommended gas pre-chargepressures can be maintained, even atrelatively high operating temperatures,the p 0 chargefor charging and testing coldaccumulators must be selected as follows:p 0, t charge= p 0,t max•t charge+ 273t max+ 273t 0= t charge(gas charging temperature in °C)To take the temperature effect into accountwhen sizing accumulators,the pre-charge pressure p 0at min.temperature t 0must be selected as follows:p 0, t min= p 0,t max•t min+ 273t max+ 273for pulsation damping:p 0,t max= 0.6 • p m(p m= average operating pressure)orp 0,t max= 0.8 • p 1(for several operating pressures)E 3.000.12/03.1217

9.3. Accumulator sizingon your PCASP - ACCUMULATORSIMULATION PROGRAMExamplePetrol tanker filling stationYou want to size an accumulator foryour hydraulic system and need to findout the required gas volume? How doesthe accumulator actually behave in thesystem?The formulae required for this arecomplicated and also have only limitedrelevance.The solution: HYDAC ASP -Accumulator Simulation Program:• zAccumulator sizing on your PC withWindows interface for bladder, pistonand diaphragm accumulators andsystems using back-up nitrogen bottles,taking into account isentropic, isothermaland polytropic changes in condition.• zCalculation of accumulator systems withthe possibility of adding accumulators,consumers and pumps with theirparticular switch-on and switch-off times.• zSimulation of pressure, temperature andvolume over the given cycle time. Realgas equations are used for this and theaccumulator type and its heat exchangebehaviour is taken into account in thecalculation.• zSizing of pulsation dampers.• zCalculation of the gas volume and theresidual pulsation of gas-filled pulsationdampers.• zSizing of shock absorbers, calculation ofthe required gas volume for "Joukowskyshock".Complex pipe systems are possible onrequest.• zDisplay of the gas compression and thedegree of efficiency.When loading fuels into vehicles, ships or barrels, the flow is suddenly interrupted whenthe valve closes.This deceleration of mass results in a pressure shock which is also referred to as a“Joukowsky pressure shock”. By using a hydraulic accumulator, the pressure shock canbe reduced to a tolerable level.Given parameters:• zTemperature: 20 °CFluid: PETROL (Premium leaded)(Density: 0.760 kg/dm 3 )• zPipe length from pump to valve:900 m• zPipe Ø internal:Internal diameter = 107.1 mm(DN100 = 114.3 external,wall thickness = 3.6 mm)• zZero head of the pump:147.5 m, equivalent to 11 bar• zPump pressure at operating point: 10 bar (pre-charge pressure p 0= 9 bar)• zMax. permitted pressure of the pipe: 12 bar• zFlow rate:500 l/min• zClosing time of the shut-off valve: 1s (0.33 s effectively)• zPipe material:Steel E = 2.1 x 10 5 N/mm²Required:a. Maximum Joukowsky pressure shock in barb. Maximum flow velocity in the pipe in m/sc. Required accumulator gas volume in litreSolution:a. Maximum Joukowsky pressure shock: 18.867 barb. Maximum flow velocity: 0.925 m/sc. Required accumulator gas volume: 41.795 lE 3.000.12/03.121810. NOTEThe information in this brochure relates tothe operating conditions andapplications described.For applications and operating conditionsnot described here, please contact therelevant technical department.Subject to technical modifications.HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.com

Bladder AccumulatorsStandard1. Description1.1. FunctionFluids are practically incompressible andcannot therefore store pressure energy.The compressibility of a gas is utilised inhydraulic accumulators for storing fluids.HYDAC bladder accumulators are basedon this principle, using nitrogen as thecompressible medium.A bladder accumulator consists of afluid section and a gas section with thebladder acting as the gas-proof screen.The fluid around the bladder is connectedto the hydraulic circuit so that thebladder accumulator draws in fluid whenthe pressure increases and the gas iscompressed. When the pressure drops,the compressed gas expands and forcesthe stored fluid into the circuit.HYDAC bladder accumulators can be usedin a wide variety of applications, some ofwhich are listed below:• zenergy storage• zemergency operation• zforce equilibrium• zleakage compensation• zvolume compensation• zshock absorption• zvehicle suspension• zpulsation dampingSee catalogue section:• zHydraulic DampersNo. 3.7011.2. Designshellseal capgas valvelock nutspacerlock nutoil valvevalve protectioncapbladderanti-extrusionringseal ringvent screwDesign• zStandard Bladder AccumulatorSB330/400/500/550HYDAC standard bladder accumulatorsconsist of the pressure vessel, theflexible bladder with gas valve and thehydraulic connection with check valve.The pressure vessel is seamless andmanufactured from high tensile steel.• zBladder accumulatorSB 330NThe flow optimised design of thestandard oil valve enables the maximumpossible operating fluid flow rate toincrease to 25 l/s on this accumulatortype.• zHigh Flow bladder accumulatorSB330HHYDAC high flow bladder accumulators,type SB330H, are high performanceaccumulators with a flow rate of up to30 l/s. The fluid connection is enlarged toallow higher flow rates.1.3. Bladder materialThe following elastomers are available asstandard:• zNBR (acrylonitrile butadiene rubber,perbunan),• zIIR (butyl rubber),• zFKM (fluoro rubber, Viton ® ),• zECO (ethylene oxide epichlorohydrinrubber).The material must be selected accordingto the particular operating fluid andtemperature.When choosing the elastomer, allowancesmust be made for the fact that the gascan cool down to below the permittedelastomer temperature if there are adversedischarge conditions (high pressure ratiop 2/p 0, high discharging velocity). This cancause cold cracking in the elastomer.The gas temperature can be calculatedusing the HYDAC Accumulator SimulationProgram ASP.1.4. CorrosionprotectionFor operation with chemically aggressivemedia, the accumulator shell can besupplied with corrosion protection, such asplastic coating on the inside or chemicalnickel-plating. If this is insufficient, thenstainless steel accumulators must be used.E 3.201.26/03.1219

1.5. Mounting positionHYDAC bladder accumulators can beinstalled vertically, horizontally and at aslant. When installing vertically or at aslant, the oil valve must be at the bottom.On certain applications listed below,particular positions are preferable:• zEnergy storage:vertical,• zPulsation damping:any position from horizontal to vertical,• zMaintaining constant pressure:any position from horizontal to vertical,• zVolume compensation:vertical.If the mounting position is horizontalor at a slant, the effective volume andthe maximum permitted flow rate of theoperating fluid are reduced.1.6. Type of mountingBy using an appropriate adapter, HYDACaccumulators, up to size 1 l, can bemounted directly inline.For strong vibrations and volumes above1 litre, we recommend the use of HYDACaccumulator supports or the HYDACaccumulator mounting set.See catalogue sections:• zSupports for Hydraulic AccumulatorsNo. 3.502• zACCUSET SBNo. 3.5032. TECHNICALSPECIFICATIONS2.1. EXPLANATORY NOTES2.1.1 Operating pressureSee tables (may differ from nominalpressure for foreign test certificates).2.1.2 Nominal volumeSee tables2.1.3 Effective gas volumeSee tablesBased on nominal dimensions, this differsslightly from the nominal volume and mustbe used when calculating the effectivevolume.2.1.4 Effective volumeVolume of fluid which is available betweenthe operating pressures p 2and p 1.2.1.5 Max. flow rate of operating fluidIn order to achieve the max. flow rategiven in the tables, the accumulator mustbe mounted vertically. It must be noted thata residual fluid volume of approx. 10 % ofthe effective gas volume remains in theaccumulator.2.1.6 FluidsThe following sealing and bladdermaterials are suitable for the fluids listedbelow.Material FluidsNBR20 Mineral oils (HL, HLP,HFA, HFB, HFC), waterECO Mineral oilIIRFKMPhosphate esterChlorinated hydrocarbons,petrol2.1.7 Permitted operating temperatureThe permitted operating temperatures aredependent on the application limits of themetal materials and the bladder.The standard valve bodies, gas valvesand accumulator shells are suitable fortemperatures from -10 °C ... +80 °C.Outside these temperatures, specialmaterial combinations must be used.The following table shows the correlationbetween bladder material and applicationtemperature.Material Temperature rangesNBR20 -15 °C ... + 80 °CNBR21 -50 °C ... + 80 °CNBR22 -30 °C ... + 80 °CECO -30 °C ... +120 °CIIR -40 °C ... +100 °CFKM -10 °C ... +150 °C2.1.8 Gas chargingHydraulic accumulators must only becharged with nitrogen.Never use other gases.RISK OF EXPLOSION!In principle, the accumulator may only becharged with nitrogen class 4.5, filtered to< 3 µm.If other gases are to be used, pleasecontact HYDAC for advice.2.1.9 Limits for gas pre-chargepressurep 0≤ 0.9 • p 1with a permitted pressure ratio of:p 2: p 0≤ 4 : 1p 2= max. operating pressurep 0= gas pre-charge pressure2.1.10 Certificate codesAustralia F1 1)Brazil U3 3)Canada S1 2)ChinaA9CISA6EU member statesUIndia U3 3)JapanPNew ZealandTSwitzerlandUUkraineA10USAS1)Approval required in the individual territories2)Approval required in the individual provinces3)Alternative certificates possibleOn no account must any welding, solderingor mechanical work be carried out on theaccumulator shell. After the hydraulic linehas been connected it must be completelyvented.Work on systems with hydraulicaccumulators (repairs, connectingpressure gauges etc) must only be carriedout once the pressure and the fluid havebeen released.Please read the Operating Manual!No. 3.201.CENote:Application examples, accumulator sizingand extracts from approvals regulations onhydraulic accumulators can be found in thefollowing catalogue section:• zAccumulatorsNo. 3.0002.1.11 Gas side connectionStandardSeries Volume Gas valve type[l]SB330 / < 1 5/8-18UNFSB400 < 50 7/8-14UNF≥ 50 M50x1.5 / 7/8-14UNFother pressure ranges on request.E 3.201.26/03.1220

2.2. Model code(also order example)SB330 H – 32 A 1 / 112 U – 330 A 050SeriesType codeH = high flowN = increased flow, standard oil valve dimensionsA = shock absorberP = pulsation damperS = suction flow stabiliserB = bladder top-repairableCombinations possible, e.g. HB - High flow with top-repairable bladder orPH - pulsation damper with high flow rate.no details = standardNominal volume [l]Fluid connectionA = standard connection, thread with internal seal faceF = flange connectionC = valve mounting with screws on undersideE = sealing surfaces on front interface (e.g. on thread M50x1.5 - valve)G = male threadS = special connection, to customer specificationGas side1 = standard model (see point 2.1.11)2 = back-up model3 = gas valve 7/8-14UNF with M8 female thread4 = gas valve 7/8-14UNF with gas valve connection 5/8-18UNF5 = gas valve M50x1.5 in accumulators smaller than 50 l6 = 7/8-14UNF gas valve7 = M28x1.5 gas valve8 = M16x1.5 gas valve9 = special gas valve, to customer specificationMaterial code 1)Standard model = 112 for mineral oilsdepending on operating mediumothers on requestFluid connection1 = carbon steel2 = high tensile steel3 = stainless steel 3)6 = low temperature steelAccumulator shell0 = plastic coated (internally)1 = carbon steel2 = chemically nickel-plated (internal coating)4 = stainless steel 3)6 = low temperature steelAccumulator bladder 2)2 = NBR203 = ECO4 = IIR (butyl)5 = NBR21 (low temperature)6 = FKM7 = Others9 = NBR22Certificate codeU = PED 97/23/ECPermitted operating pressure [bar]ConnectionThread, codes for fluid connections: A, C, E, GA = thread to ISO 228 (BSP)B = thread to DIN 13 or ISO 965/1 (metric)C = thread to ANSI B1.1 (UN..-2B seal SAE J 514)D = thread to ANSI B1.20.1 (NPT)S = special thread, to customer specificationFlange, codes for fluid connection: FA = DIN flangeB = flange ANSI B16.5C = SAE flange 3000 psiD = SAE flange 6000 psiS = special flange, to customer specificationPre-charge pressure p 0[bar] at 20 °C, must be stated clearly, if required!1)Not all combinations are possible2)When ordering spare bladder, please state diameter of the smaller shell port3)Depending on type and pressure ratingE 3.201.26/03.1221

3. DIMENSIONS AND SPARE PARTS3.1. DimensionsNominal volumeValveMax. operating pressure(PED 97/23/EC)Effective gas volumeWeightAmax.B C Ø Dmax.JthreadØ E SW Q 1)Dimensions[l] [bar] [l] [kg] [mm] [mm] [mm] [mm]ISO228 [mm] [mm] [l/s]0.5400 0.5 2.8 27057 33.5 95.5 G 3/4 50 32 43304.5 30211811550 8.5 334 68 121 G 1 45 6330 2.4 10 531 63 118 G 1 1/4 50 102.5550 2.5 539 68 121 G 1 45 6Standard33013.55843.7 419 63 173 G 1 1/4 67 50 104005 550 4.9 23 867 68 121 G 1 45 66 330 5.7 15 531G 1 1/463 17310, 2) 330 9.3 25 728 G 1 1/450 10Standard159.3 31.5 568 103G 2 100 70N 330229255810 H 9 34.5 603 138 G 2 1/2 125 90 301320243250Standard 400 9.3 37.5 572 103 233 G 2 100 70 15500 8.8 45 585 77 68 241Standard1543 686 103G 2 100 70N 330229251258H 46 695 138 G 2 1/2 125 90 30Standard 400 49 666 103 233 G 2 100 70 15Standard1518.4 50.5 896 103G 2 100 70N 3302292558H 17.5 53.5 931 138 G 2 1/2 125 90 30Standard 400 18.4 63.5 896 103 233 100 70G 215500 17 75.5 901 77 68 241 110 75Standard1523.6 69 1062 103 G 2 100 70N 33058 229 25H 24 72 1097 138 G 2 1/2 125 90 30Standard1533.9 87 1411 103G 2 100 70N 3302292558H 32.5 90 1446 138 G 2 1/2 125 90 30Standard 400 33.9 104.5 1411 103 233 100 70G 215500 33.5 127 1446 77 68 241 110 7515117.5 1931 103G 2 100 70N 3302292547.5H 120.5 1966 138 68 G 2 1/2 125 90 30AdaptorforspecialthreadE 3.201.26/03.12Standard 400 142 1931 103 233 G 2 100 70 15500 48.3 169 1951 77 241 756060 182 115680 85 221 1406356100 105 255 1656Standard 330138 68 G 2 1/2 125 90 30130 133 305 1976160 170 396 2006406200 201 485 23061)Q = max. flow rate of operating fluid2)slimline version, for confined spaces22

3.2. Spare PartsSB330/400/440/500/550SB330H / SB330NDesignationItemBladder assemblyconsisting of:Bladder 2Gas valve insert* 3Lock nut 4Seal cap 5Valve protection cap 6O-ring 7Seal kitconsisting of:O-ring 7Washer 15O-ring 16Vent screw 19Support ring 23O-ring 27Repair kit 1)consisting of:Bladder assembly (see above)Seal kit (see above)Anti-extrusion ring 14Oil valve assemblyconsisting of:Valve assembly (items 9-13) 9Anti-extrusion ring 14Washer 15O-ring 16Spacer 17Lock nut 18Vent screw 19Support ring 23* available separately1)When ordering, please state diameter of the smallershell port.Item 1 not available as a spare part.Item 19 for NBR/Carbon steel: seal ring (item 20)is includedItem 25 must be ordered as an accessory (see Point 4).3.3. REPAIR KITSNBR, carbon steelNominal volume: 0.5 ... 200 litresStandard gas valveNom. volume [l] Part no.0.5 021281691 021062612.5 021062004 021062045 021062086 0211210010* 0311751210 0210621213 0210621620 0210622024 0210622432 0210622850 0210625260 0311751380 03117514100 03117515130 03117516160 03117517200 03117558* slimline version for confined spacesothers on requestDetail "X"SB330/400 – 0.5 ... 6 lSB330/400/500 – 10 ... 200 l andSB330H – 10 ... 200 lSB550 – 1 ... 5 lE 3.201.26/03.1223

4. ACCESSORIES FOR BLADDERACCUMULATORS4.1. ADAPTERS (gas side)To monitor the accumulator pre-charge pressure, HYDAC offers aselection of gas side adapters.For standard connection sizes (7/8-14UNF) the adapters shownbelow are available and must be stated separately at time ofordering.For other gas-side accumulator connections (e.g. 5/8-18UNF)please contact your HYDAC agent.4.1.1 Pressure gauge model:Gas side connection on the bladder accumulator for permanentmonitoring of the pre-charge pressure4.1.2 Pressure gauge model with shut-off valveGas side connection on the bladder accumulator for permanentmonitoring of the pre-charge pressure with shut-off option.gauge Ø100Pressure gaugeØ63gauge shut-offvalveapprox.GaugeindicationrangePressuregaugePart no.Adapter body*AdapterassemblyPart no.00366621Part no.– –0 - 10 bar 00614420 021084160 - 60 bar 00606886 030933860 - 100 bar 00606887 00239275 021047780 - 160 bar 00606888 030323480 - 250 bar 00606889 021002170 - 400 bar 00606890 02102117* p max= 400 barGaugeindicationrangePressuregaugePart no.Adapter body*AdapterassemblyPart no.02103381Part no.– –0 - 25 bar 00631380 021052160 - 60 bar 00606771 021100590 - 100 bar 00606772 00363713 031393140 - 160 bar 00606773 032029700 - 250 bar 00606774 031941540 - 400 bar 00606775 02103226* p max= 400 barE 3.201.26/03.1224

4.1.3 Remote monitoring of the pre-charge pressureTo monitor the pre-charge pressure in hydraulic accumulatorsremotely, gas side adapters with pressure gauge and mountingholes are available.In order to connect these adapters directly with the hydraulicaccumulator using appropriate lines, accumulator adapters arealso available for connection at the top (see diagram 1) or forside-connection (see diagram 2).4.2. ADAPTERS FOR STANDARD BLADDERACCUMULATORS (fluid side)To connect the bladder accumulator to pipe fittings. These areavailable separately.O-ring2 holesgauge Ø63approx.GaugeindicationrangePressuregaugePart no.Adapter body*AdapterassemblyPart no.03037666Part no.– –0 - 10 bar 00614420 030958180 - 60 bar 00606886 030958190 - 100 bar 00606887 02116746 030958200 - 160 bar 00606888 030958210 - 250 bar 00606889 030958220 - 400 bar 00606890 03095823* p max= 400 barO-ring 11x2hex.32Diagram 1 Diagram 2D1Accum.conn.*D2 D3 L1 L2 L3 SW O-ringPart no.NBR/(ISO228-BSP) [mm]Carbon[mm] [mm] [mm] [mm] [mm] [mm] steelG 3/4G 3/8 55 12 3228 2817x3 02104346G 1/2 60 14 36 02104348G 3/8 281202116345G 1 1/4G 1/2 34 50 14 46 021052323730x3G 3/4 44 16 02104384G 1 50 67 18 65 02110124G 1/2 341402104853G 2G 3/4 44 60 16 65 021048494448x3G 1 1/4 60 20 02107113G 1 1/2 68 80 22 70 02105905* others on request5. NOTEThe information in this brochure relates to the operatingconditions and applications described.For applications and operating conditions not described, pleasecontact the relevant technical department.Subject to technical modifications.D1ThreadedconnectionD2[mm]ISO228- G 1/4 25ISO228- G 3/8 28T14ISO228- G 1/2 34 16* p max= 400 barAdapter body*Part no.AdapterassemblyPart no.Diag.00238709 02109481 100241740 02102042 200355021 02109483 103280414 00366607 202110594 02110636 100237884 00366608 2HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.201.26/03.1225

E 3.201.26/03.1226

Bladder AccumulatorsLow Pressure1. Description1.1. FunctionFluids are practically incompressible andcannot therefore store pressure energy.The compressibility of a gas is utilised inhydraulic accumulators for storing fluids.HYDAC bladder accumulators are basedon this principle, using nitrogen as thecompressible medium.A bladder accumulator consists of afluid section and a gas section with thebladder acting as the gas-proof screen.The fluid around the bladder is connectedto the hydraulic circuit so that thebladder accumulator draws in fluid whenthe pressure increases and the gas iscompressed. When the pressure drops,the compressed gas expands and forcesthe stored fluid into the circuit.HYDAC bladder accumulators can be usedin a wide variety of applications, some ofwhich are listed below:• zenergy storage• zemergency operation• zforce equilibrium• zleakage compensation• zvolume compensation• zshock absorption• zvehicle suspension• zpulsation dampingSee catalogue section:• zHydraulic DampersNo. 3.7011.2. DesignHYDAC low pressure bladder accumulatorsconsist of a welded pressure vessel, aflexible bladder with gas valve and ahydraulic connection with check valve or aperforated disc.The table shows the different modelswhich are described in greater detail in thepages that follow:DesignationSB40- 2.5 ... 50Perm.pressure[bar] 2)VolumeQ 1)[l] [l/s]2.5 - 50 740SB40- 70 ... 220 70 - 220 30SB35HB- 20 ... 50 35 20 - 50 20SB16A- 100 ... 450 16SB35A- 100 ... 450 35SB16AH- 100 ... 450 16SB35AH- 100 ... 450 35100 - 4501)Q = max. flow rate of pressure fluid2)Higher pressures on request1.3. Bladder materialThe following elastomers are available asstandard:• zNBR (acrylonitrile butadiene rubber,perbunan),• zIIR (butyl rubber),• zFKM (fluoro rubber, Viton ® ),• zECO (ethylene oxide epichlorohydrin1520rubber).The material must be selected accordingto the particular operating fluid andtemperature.When choosing the elastomer, allowancesmust be made for the fact that the gascan cool down to below the permittedelastomer temperature if there are adversedischarge conditions (high pressure ratiop 2/p 0, high discharging velocity). This cancause cold cracking in the elastomer.The gas temperature can be calculatedusing the HYDAC Accumulator SimulationProgram ASP.1.4. CorrosionprotectionFor operation with chemically aggressivemedia, the accumulator shell can besupplied with corrosion protection, such asplastic coating on the inside or chemicalnickel-plating. If this is insufficient, thenstainless steel accumulators must be used.1.5. Mounting positionHYDAC bladder accumulators can beinstalled vertically, horizontally and at aslant. When installing vertically or at aslant, the oil valve must be at the bottom.On certain applications listed below,particular positions are preferable:• zEnergy storage:vertical,• zPulsation damping:any position from horizontal to vertical,• zMaintaining constant pressure:any position from horizontal to vertical,• zPressure surge damping:vertical,• zVolume compensation:vertical.If the mounting position is horizontalor at a slant, the effective volume andthe maximum permitted flow rate of theoperating fluid are reduced.Bladder accumulators SB16A / SB35A andSB16AH / SB35AH must only be installedvertically with the gas side at the top.1.6. Type of mountingFor strong vibrations and volumes above1 litre, we recommend the use of HYDACaccumulator supports or the HYDACaccumulator mounting set.See catalogue sections:• zSupports for Hydraulic AccumulatorsNo. 3.502• zACCUSET SBNo. 3.503E 3.202.2/03.1227

2. TECHNICALSPECIFICATIONS2.1. EXPLANATORY NOTES2.1.1 Operating pressureSee tables (may differ from nominalpressure for foreign test certificates).2.1.2 Nominal volumeSee tables2.1.3 Effective gas volumeSee tablesBased on nominal dimensions, this differsslightly from the nominal volume and mustbe used when calculating the effectivevolume.2.1.4 Effective volumeVolume of fluid which is available betweenthe operating pressures p 2and p 1.2.1.5 Max. flow rate of the operatingfluidIn order to achieve the max. flow rategiven in the tables, the accumulator mustbe mounted vertically. It must be noted thata residual fluid volume of approx. 10 % ofthe effective gas volume remains in theaccumulator.2.1.6 FluidsThe following sealing and bladdermaterials are suitable for the fluids listedbelow.MaterialNBRECOIIRFKMFluidsMineral oils (HL, HLP, HFA,HFB, HFC), waterMineral oilPhosphate ester, waterChlorinated hydrocarbons,petrol2.1.7 Permitted operating temperatureThe permitted operating temperatures aredependent on the application limits of themetal materials and the bladders.The standard valve bodies, gas valvesand accumulator shells are suitable fortemperatures from -10 °C ... +80 °C.Outside these temperatures, specialmaterial combinations must be used.The following table shows the correlationbetween bladder material and applicationtemperature.Material Temperature rangesNBR20 -15 °C ... +80 °CNBR21 -50 °C ... +80 °CNBR22 -30 °C ... +80 °CECO -30 °C ... +120 °CIIR -40 °C ... +100 °CFKM -10 °C ... +150 °C2.1.8 Gas chargingHydraulic accumulators must only becharged with nitrogen.Never use other gases.RISK OF EXPLOSION!In principle, the accumulator may only becharged with nitrogen class 4.5, filtered to< 3 µm.If other gases are to be used, pleasecontact HYDAC for advice.2.1.9 Limits for gas pre-chargepressurep 0≤ 0.9 • p 1with a permitted pressure ratio of:p 2: p 0≤ 4 : 1p 2= max. operating pressurep 0= gas pre-charge pressureFor HYDAC low pressure accumulators,the following must also be taken intoaccount:Type SB40: p 0 max= 20 barType SB35HB: p 0 max= 10 bar2.1.10 Certificate codesAustralia F1 1)Brazil U3 3)Canada S1 2)ChinaA9CISA6EU member statesUIndia U3 3)JapanPNew ZealandTSwitzerlandUUkraineA10USASothers on request1)Approval required in the individual territories2)Approval required in the individual provinces3)Alternative certificates possibleOn no account must any welding, solderingor mechanical work be carried out on theaccumulator shell. After the hydraulic linehas been connected it must be completelyvented.Work on systems incorporating hydraulicaccumulators (repairs, connectingpressure gauges etc) must only be carriedout once the pressure and the fluid havebeen released.Please read the Operating Manual!No. 3.201.CENote:Application examples, accumulator sizingand extracts from approvals regulations onhydraulic accumulators can be found in thefollowing catalogue section:• zAccumulatorsNo. 3.000E 3.202.2/03.1228

2.2. Model code(also order example)SB40 A – 100 F 7 / 112 U – 40 ASeriesType codeH = high flowN = increased flow, standard oil valve dimensionsA = shock absorberB = bladder top-repairableCombinations possible, e.g. HB - High flow with top-repairable bladderno details = standardNominal volume [l]Fluid connectionA = standard connection, thread with internal seal faceF = flange connectionC = valve mounting with screws on undersideE = sealing surfaces on front interface (e.g. on thread M50x1.5 - valve)G = male threadS = special connection, to customer specificationGas side1 = standard model2 = back-up model3 = gas valve 7/8-14UNF with M8 female thread4 = gas valve 7/8-14UNF with gas valve connection 5/8-18UNF5 = gas valve M50x1.5 in accumulators smaller than 50 l6 = 7/8-14UNF gas valve7 = M28x1.5 gas valve8 = M16x1.5 gas valve9 = special gas valve, to customer specificationMaterial code 1)Standard model = 112 for mineral oilsdepending on operating mediumOthers on requestFluid connection1 = carbon steel2 = high tensile steel3 = stainless steel 3)6 = low temperature steelAccumulator shell0 = plastic coated (internally)1 = carbon steel2 = chemically nickel-plated (internal coating)4 = stainless steel 3)6 = low temperature steel2) 4)Accumulator bladder2 = NBR203 = ECO4 = IIR (butyl)5 = NBR21 (low temperature)6 = FKM7 = Others9 = NBR22Certificate codeU = PED 97/23/ECPermitted operating pressure [bar]ConnectionThread, codes for fluid connections: A, C, E, GA = thread to ISO 228 (BSP)B = thread to DIN 13 or ISO 965/1 (metric)C = thread to ANSI B1.1 (UN..-2B seal SAE J 514)D = thread to ANSI B1.20.1 (NPT)S = special thread, to customer specificationFlange, codes for fluid connection: FA = EN 1092-1 welding neck flangeB = flange ASME B16.5C = SAE flange 3000 psiD = SAE flange 6000 psiS = special flange, to customer specificationRequired gas pre-charge pressure must be stated separately!1)Not all combinations are possible2)When ordering spare bladder, please state diameter of the smaller shell port3)Depending on type and pressure rating4)Standard materials, all other materials on requestE 3.202.2/03.1229

3. Low pressure accumulators3.1. Standard bladder accumulatorsSB40-2.5 ... 503.1.1 DesignHYDAC standard low pressure accumulators consist of:• zA welded pressure vessel which can be treated with various types of corrosionprotection for chemically aggressive fluids, or can be supplied in stainless steel.• zA bladder with gas valve. The bladders are available in the elastomers listed underpoint 2.1.• zA hydraulic connector with a perforated disc which is held in place with retaining ring.3.1.3 Spare partsSB40-2.5 ... 503.1.2 DimensionsSB40-2.5 ... 50E 3.202.2/03.12SB40-2.5 ... 50Permitted operating pressure 40 bar(PED 97/23/EC)Nominal Eff. gas Weight Avolume volumeB C Ø D[l] [l] [kg] [mm] [mm] [mm] [mm]2.5 2.5 9 541 122 1085 5.0 13 89110 8.7 14 5336820 18.0 23 843106 21932 33.5 38 1363JthreadISO DIN 13M100x2 G 2K*threadISO 22850 48.6 52 1875 68 2)* Item 16 must be ordered separately1)Q = max. flow rate of operating fluid (at approx. 0.5 bar pressure drop via adapter)2)Lock nutSW[mm]36Q 1)[l/s]7DescriptionItemBladder assembly 1)consisting of:Bladder 2Gas valve insert* 3Lock nut 4Seal cap 5Valve protection cap 6O-ring 7Seal kitconsisting of:O-ring 7Vent screw 13Seal ring 14O-ring 15Repair kit 1)consisting of:Bladder assembly (see above)Seal kit (see above)Hydraulic connector assemblyconsisting of:Perforated disc 10Anti-extrusion ring 11Retaining ring 12Vent screw 13Seal ring 14O-ring 15* available separately1)When ordering, please state diameter of the smallershell port.Item 1 not available as a spare part.30

3.2. Bladder accumulatorsSB40-70 ... 2203.2.1 DesignHYDAC low pressure accumulators, type SB40-70 ... 220 consist of:• zA welded pressure vessel which is compact and yet suitable for high flow rates andlarge volumes.The pressure vessel is manufactured in carbon steel or in stainless steel.• zA bladder with gas valve.• zA hydraulic connector with check valve.3.2.3 Spare partsSB40-70 ... 2203.2.2 DimensionsSB40-70 ... 220SB40-70 ... 220Permitted operating pressure 40 bar(PED 97/23/EC)Nominal Eff. gas Weight Avolume[l]volume[l] [kg]max.[mm]70 64 94 1199100 111 113 1629130 133 133 1879190 192 169 2086220 220 193 23301)Q = max. flow rate of operating fluidB C[mm] [mm]137 78Ø D[mm]356407JthreadISO 228Q 1)[l/s]G 2 1/2 30DescriptionItemBladder assembly 1)consisting of:Bladder 2Gas valve insert* 3Lock nut 4Seal cap 5Valve protection cap 6O-ring 7Seal kitconsisting of:O-ring 7Washer 15O-ring 16Vent screw 19Support ring 23O-ring 27Repair kit 1)consisting of:Seal kit (see above)Bladder assembly (see above)Anti-extrusion ring 14Oil valve assemblyconsisting of:Valve assembly (items 9-13) 9Anti-extrusion ring 14Washer 15O-ring 16Spacer 17Lock nut 18Vent screw 19Support ring 23* available separately1)When ordering, please state diameter of the smallershell port.Item 1 not available as a spare part.Item 19 for NBR/Carbon steel:seal ring (item 20) includedE 3.202.2/03.1231

3.3. Low pressure accumulatorsSB16/35A and SB16/35AH3.3.1 DesignHYDAC low pressure bladder accumulators for large volumes, type SB35A and SB16Aare in a weld construction in carbon steel or stainless steel.The hydraulic outlet is covered by a perforated disc which prevents the flexible bladderextruding from the shell. The bladder is top-repairable.3.3.3 Spare partsSB16/35A, SB16/35AH3.3.2 DimensionsSB16/35A, SB16/35AHDescriptionItemBladder 2Lock nut 3O-ring 11Seal ring 13Vent screw 18O-ring 19Retaining ring 21O-ring 25welding neck flangeDN100 PN16/PN40EN1092-1/11(others on request)welding neck flangeDN80 PN16/PN40EN1092-1/11 (others on request)SB16/35APermitted operating pressure 16/35 bar(PED 97/23/EC)Nominal Eff. Weight ABCDN*volume gas(approx.) (approx.) (approx.)[l]volume[l][kg]SB16A SB35A[mm]SB16A SB35A[mm]SB16A SB35A[mm]SB16A SB35A100 99 84 144 880 880 390 403150 143 101 161 1070 1080 490 503200 187 122 223 1310 1320 685 698300 278 155 288 1710 1720 975 988185 198 100375 392 191 326 2230 2240 1250 1263450 480 237 386 2325 2635 1465 1478E 3.202.2/03.1232SB16/35AHPermitted operating pressure 16/35 bar(PED 97/23/EC)Nominal Eff. Weight ABCDN*volume gas(approx.) (approx.) (approx.)volume [kg][mm][mm][mm][l] [l] SB16AH SB35AH SB16AH SB35AH SB16AH SB35AH SB16AH SB35AH100 99 93 153 957 965 457 465150 143 110 170 1157 1165 557 565200 187 131 230 1417 1425 842 850300 278 164 297 1865 1873 1092 1100245 254 80375 392 200 335 2307 2315 1342 1350450 480 246 395 2702 2710 1542 1550* to EN1092-1/11 / PN16 or PN40others on request

3.4. HIGH FLOW BLADDER ACCUMULATORSB35HB3.4.1 DesignHYDAC high flow bladder accumulators type SB35HB are high performanceaccumulators for flow rates of up to 20 l/s at 2 bar Dp.They consist of a pressure vessel in a weld construction and a flexible bladder with gasvalve.The pressure vessel contains a fixed perforated disc, permitting a high flow rate throughits large free cross-section. For use with chemically aggressive fluids, the shell can bemanufactured in stainless steel. See point 2.1. for bladder materials.3.4.3 Spare partsSB35HB3.4.2 DimensionsSB35HBthebladderistoprepairable.SB35HBPermitted operating pressure 35 bar(PED 97/23/EC)welding neck flangeDN50 / PN40EN1092-1/11(others on request)Nominalvolume[l]Eff. gasvolume[l]Weight[kg]Amax.[mm]C[mm]Ø D[mm]JthreadISO 228SW[mm]20 19.8 43 1081 63 3632 35.0 56 1591219 G 1/250 50.0 69 2091 78 Ø68 2)1)Q = max. flow rate of pressure fluid2)Lock nutQ 1)[l/s]20DescriptionItemBladder assembly 1)consisting of:Bladder 2Gas valve insert* 3Lock nut 4Seal cap 5Valve protection cap 6O-ring 7Seal kitconsisting of:Gas valve insert* 3O-ring 7O-ring 8Repair kit 1)consisting of:Bladder assembly (see above)Seal kit (see above)* available separately1)When ordering, please state diameter of the smallershell port.Item 1 not available as a spare part.4. NOTEThe information in this brochure relates tothe operating conditions andapplications described.For applications and operating conditionsnot described, please contact the relevanttechnical department.Subject to technical modifications.HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.202.2/03.1233

E 3.202.2/03.1234

Bladder AccumulatorsHigh pressure1. Description1.1. FUNCTIONFluids are practically incompressible andcannot therefore store pressure energy.The compressibility of a gas (nitrogen)is utilised in hydraulic accumulatorsfor storing fluids. HYDAC bladderaccumulators are based on this principle.A bladder accumulator consists of a fluidsection and a gas section with the bladderacting as the gas-proof screen.The fluid around the bladder is connectedto the hydraulic circuit so that thebladder accumulator draws in fluid whenthe pressure increases and the gas iscompressed. When the pressure drops,the compressed gas expands and forcesthe stored fluid into the circuit.HYDAC bladder accumulators can be usedin a wide variety of applications and arealso available in different pressure ranges,see catalogue sections:• zBladder Accumulators StandardNo. 3.201• zBladder Accumulators Low PressureNo. 3.202• zAccumulatorsNo. 3.0001.2. CONSTRUCTIONThe high pressure bladder accumulatorconsists of the pressure vessel, the flexiblebladder with gas valve and the hydraulicconnection with check valve.1.2.1 Shell materialThe forged pressure vessel is seamlessand manufactured from high tensilechrome molybdenum steel.1.2.2 Bladder materialThe following elastomers are available asstandard:• zNBR (acrylonitrile butadiene rubber,perbunan),• zIIR (butyl rubber),• zFKM (fluoro rubber, Viton ® ),• zECO (ethylene oxide epichlorohydrinrubber).The material used depends on theparticular operating medium andtemperature.When choosing the elastomer, allowancesmust be made for the fact that the gascan cool down to below the permittedelastomer temperature if there are adversedischarge conditions (high pressure ratiop 2/p 0, high discharging velocity). This cancause cold cracking in the elastomer.The gas temperature can be calculatedusing the HYDAC Accumulator SimulationProgram ASP.1.2.3 Corrosion protectionFor operation with chemically aggressivemedia, the accumulator shell can bechemically nickel-plated internally orsupplied with a special plastic coating,such as Duroplast.For external corrosion protection theaccumulator can be supplied with anepoxy resin finish specially for offshoreapplications.1.3. MOUNTING POSITIONAND TYPE OFMOUNTINGInformation on secure mounting positionsand mounting elements can be found inthe following catalogue sections:• zBladder Accumulators StandardNo. 3.201• zSupports for Hydraulic AccumulatorsNo. 3.502• zACCUSET SBNo. 3.503E 3.203.3/03.1235

2. TECHNICAL SPECIFICATIONS2.1. Model code(also order example)SB690 - 32 A 1 / 312 U - 690 DSeriesNominal volume [l]Fluid connectionA = standard connectionGas side connection1 = standard model 2)9 = special model (example: 1/4" - BSP)Material code 1)Fluid connection2 = high tensile steel3 = stainless steel6 = low temperature steelAccumulator shell0 = plastic coated (internally)1 = carbon steel2 = chemically nickel-plated (internal coating)6 = low temperature steel8 = plastic coated (e.g. Duroplast) internally and externallyAccumulator bladder2 = NBR203 = ECO4 = IIR (butyl)5 = NBR21 (low temperature)6 = FKM7 = Others9 = NBR22Certificate codeU = PED 97/23/ECPermitted operating pressure [bar]ConnectionA = Thread to ISO228 (1/2" BSP)D = Thread to ANSI B1.20.3 (1/2" NPTF)Required gas pre-charge pressure must be stated separately!1)Not all combinations are possible2)Gas valve in SB < 10 l = 7/8 - 14 UNF,in SB ≥ 10 l = M50x1.5E 3.203.3/03.122.2. EXPLANATORY NOTES2.2.1 Operating pressure690 bar (10000 psi)Higher pressures on request2.2.2 Permitted working temperature and elastomer resistanceNBR20 -15 °C ... +80 °C waterNBR21 -50 °C ... +80 °C water-glycolNBR22 -30 °C ... +80 °C mineral oilECO -30 °C ... +120 °C mineral oilIIR -40 °C ... +100 °C phosphate ester, waterFKM -10 °C ... +150 °C chlorinated hydrocarbons, petrol2.2.3 Gas chargingHydraulic accumulators must only becharged with nitrogen.Never use other gases.RISK OF EXPLOSION!In principle, the accumulator may only becharged with nitrogen class 4.5, filtered to< 3 µm.If other gases are to be used, pleasecontact HYDAC for advice.36

E 3.203.3/03.1238

Piston Accumulators1. Description1.1. FunctionFluids are practically incompressible andcannot therefore store pressure energy.The compressibility of a gas (nitrogen)is utilised in hydraulic accumulators forstoring fluids. HYDAC piston accumulatorsare based on this principle.A piston accumulator consists of a fluidsection and a gas section with the pistonacting as the gas-proof screen.The gas section is pre-charged withnitrogen.The fluid section is connected to thehydraulic circuit so that the pistonaccumulator draws in fluid when thepressure increases and the gas iscompressed.When the pressure drops, the compressedgas expands and forces the stored fluidinto the circuit.1.2. Designgas valveend cap safety deviceend cappistonsealing systemcylinderexternal sealend cap safety devicefluid connectionHYDAC piston accumulators consist of:• zA cylinder with very finely machinedinternal surface.• zEnd caps on the gas side and the oilside. Sealed with O-rings.• zA floating steel or aluminium pistonwhich can easily be accelerated due toits low weight.• zA sealing system adapted to theparticular application.The piston floats on two guide ringswhich prevent metal-to-metal contactbetween the piston and the accumulatorwall.For use with certain aggressive orcorrosive fluids, the parts coming intocontact with the fluid can be nickel platedfor protection, or made entirely fromcorrosion-resistant material.Suitable materials are also available forlow temperature applications.1.3. SEALING SYSTEMSPrecise information about operatingconditions is required in order to selectthe most appropriate sealing system.Important criteria for this selection are, forexample:• zDesign pressure,• zEffective pressure differential,• zSwitching frequency or cycles,• zTemperature fluctuation,• zOperating fluid,• zCleanliness of fluid (micron rating offilter),• zMaintenance requirements.The sealing systems differ according tothe type of piston used, each of which hasits own type and arrangement of seals.The following elastomer sealing materialsare available, depending on the operatingconditions:• zNBR (acrylonitrile butadiene rubber,perbunan),• zFKM (fluoro rubber, Viton ® ),• zPUR (polyurethane).E 3.301.16/03.1239

Piston design type Application Degree of contaminationin the fluid1 • zFor general accumulator operation Optimized for applications withwithout special requirements a high level of contaminationNotesApplication limitations:max. piston velocity: 0.5 m/s2 • zLow-friction design• zFor high piston speeds• zSlow movements without stick-slipeffectApplication limitations:max. piston velocity: 3.5 m/s3 • zLow-friction design• zSimple-to-fit seals• zSlow movements without stick-slipeffectApplication limitations:max. piston velocity: 0.8 m/s4 • zLow-friction design with emergencysafety features• zSlow movements without stick-slipeffect• zVery low oil transfer to the gas sideFiltration:NAS 1638 - Class 6ISO 4406 - Class 17/15/121 guide ring forpistons with Ø ≤ 150 mm2 guide rings forpistons Ø ≥ 180 mmApplication limitations:max. piston velocity: 5 m/sE 3.301.16/03.1240

1.4. Mounting positionHYDAC piston accumulators operate inany position.Vertical installation is preferable withthe gas-side at the top, to preventcontamination from the fluid settling onthe piston seals. For accumulators withcertain piston position indicators verticalinstallation is essential (see 1.7.). Pistonaccumulators with a piston diameter≥ 355 mm must only be mounted vertically.1.5. ADVANTAGES OFHYDAC PISTONACCUMULATORS• zcomplete range from 0.1 ... 1200 Inominal volume,• zhigh ratios possible between pre-chargepressure and max. working pressure,• zeconomic solution using back-up gasbottles for low pressure differentials,• zhigh flow rates possible;limitation: max. piston velocity,• zpower savings,• zhigh level of efficiency of the hydraulicinstallation,• zgas-tight and leakage free,• zno sudden discharge when seals areworn,• zrequires little space,• zmonitoring of the volume across theentire piston stroke or electrical limitswitch.Further advantages of using thelow-friction sealing system:• zminimum friction,• zalso suitable for low pressuredifferentials,• zno start-up friction,• zno stick-slip,• zlow noise, no vibration,• zhigh piston velocityup to 5 m/s for piston type 4,• zimproved accumulator efficiency,• zgood life expectancy of sealsbecause of low wear,• zsuitable for large temperaturefluctuations,• zlow maintenance requirement.1.6. TECHNICALREQUIREMENTSHYDAC piston accumulators are suitablefor high flow rates. With the largest pistonaccumulator diameter made to date of800 mm, a flow rate of 1000 l/s can beachieved at a piston velocity of 2 m/s.1.6.1 Effect of sealing frictionThe permitted piston velocity depends onthe sealing friction.Higher piston velocities are possible wherethere is less sealing friction.HYDAC piston accumulators of pistondesign type 2 allow velocities of up to3.5 m/s.1.6.2 Permitted velocitiesGas velocityThe flow velocities in the gas connectionand pipe system should be limited to30 m/s when using piston accumulators ofthe back-up type. Gas velocities of over50 m/s should be avoided at all costs.Oil velocityIn order to limit the pressure losses whenthe operating fluid is displaced, the flowvelocity should not exceed 10 m/s in theadapter cross-section.1.6.3 Function tests and fatigue testsFunction tests and fatigue tests arecarried out to ensure the developmentand continuous improvement of our pistonaccumulators.By subjecting the accumulators toendurance tests under realistic as wellas extreme working conditions, importantdata can be obtained about the longtermbehaviour of the components. In thecase of piston accumulators, importantinformation on gas density and the lifeexpectancy of seals is gained from suchtests.Vital data for use in accumulator sizing isgained by altering the working pressureand switching cycles.1.6.4 FluidsThe following sealing materials are suitablefor the fluids listed below:NBR, resistant to:• zmineral oils (HL and HLP)• zfire-resistant fluids from the groups HFA,HFB and HFC• zwater and seawaterup to approx. 100 °CNBR, not resistant to:• zaromatic hydrocarbons• zchlorinated hydrocarbons• zamines and ketones• zhydraulic fluids of type HFDFPM, resistant to:• zmineral oils (HL and HLP)• zhydraulic fluids of type HFD• zfuels as well as aromatic and chlorinatedhydrocarbons• zinorganic acids (but not all, pleasecontact our technical department)FPM, not resistant to:• zketones and amines• z(anhydrous) ammonia• zorganic acids such asformic acid and acetic acidPUR, resistant to:• zmineral oils (HL and HLP)• znon-flam fluids from the HFA groupPUR, not resistant to:• zwater and water-glycol mixtures• zalkalis• zacids1.6.5 Temperature ranges of the sealsMaterial HYDAC Temp. rangeabbrev. code long-termNBR 2 -20 °C ... + 80 °CFPM 6 -15 °C ... +160 °CPUR 8 -30 °C ... + 80 °CFor temperatures outside these ranges,please contact our technical departmentfor more information. There are alsospecial grades available depending on theapplication.1.6.6 Gas chargingHydraulic accumulators must only becharged with nitrogen.Never use other gases.RISK OF EXPLOSION!In principle accumulators may only becharged with nitrogen class 4.5, filtered to< 3 µm.If other gases are to be used, pleasecontact HYDAC for advice.E 3.301.16/03.1241

1.7. PISTON POSITIONINDICATORS1.7.1 Electricallimit switch1.7.2 Protrudingpiston rod1.7.3 Ultrasonicdistance measurementThe electrical limit switch usually monitorsthe max. charged condition of the pistonaccumulator.It can, however, also permit controlfunctions of the attached hydraulics to becarried out over a certain stroke length.The limit switch consists of the switchingrod with a permanent solenoid which isnot attached to the the piston and canonly achieve a limited stroke, and ananti-magnetic housing and two or moreswitches.These switches can be normally closedor normally open or bistable. An N/Cor N/O and a bistable switch cannot befitted simultaneously to a limit switch. Ourstandard limit switch is fitted with a N/Cand a N/O switch.On another model, switching is carried outby inductive proximity switches.The switch is reset by a spring or the forceof gravity.Vertical installation is preferable, due to thefriction and possible wear and tear in therod guide.For limit switches with a stroke of> 200 mm, vertical mounting with the gasside at the top is essential.The maximum piston velocity must notexceed 0.5 m/s over the stroke range ofthe limit switch.The protruding piston rod permits theposition of the piston to be monitored overthe whole stroke. It consists of the pistonrod, which is fixed to the piston and sealedin, and what is known as the trip camwhich actuates the limit switches.The position of the piston can bemonitored at any point using the trip cam.This facility is used mainly to switch thepump on and off.Normally the piston rod protrudes fromthe accumulator on the fluid side to avoidpossible points of leakage on the gas side.On the protruding piston rod version, thehydraulic connection will be on the sideif the size of the end cap does not permitotherwise.The protruding piston rod functions in anymounting position. There must howeverbe sufficient space available for theprotruding piston rod to move in and out.The maximum piston velocity should notexceed 0.5 m/s.The piston position is determined byultrasonic measurement.It is only possible to take themeasurements from the fluid side becausea continuous sound carrier mediumis required for ultrasound. In order toeliminate false readings, the fluid mustbe as free of air bubbles as possible. Thepiston should be mounted such that no aircan collect under the sensor.The measurement data is evaluated bya microprocessor and is converted intoa continuous measurement signal. It ispossible to pick up interim measurementresults to switch system parts e.g. turn thepump on and off.The most important features of the systemare:• zProtection classIP 65 according to DIN 40050• zLCD display• zOutputs– 5 floating relay change-over switches(with 125 V, 1A rating),of which 1 is error output,and 4 are user-adjustable switchingthresholds between 0 and 100 %– 4 - 20 mAThe maximum pressure for the sensormust not exceed 350 bar.E 3.301.16/03.1242

1.7.4 Cable tensionmeasurement system1.7.5 Magnetic flapindication1.7.6 Piston positionswitchUsing the cable tension measurementsystem, the position of the piston can bedetermined by means of a cable which isfixed to the piston.The cable is attached to a wheel which istensioned by a spring. This wheel altersan electrical resistance via an attachedrotary potentiometer during the pistonmovement. This resistance is convertedby a transducer into an electrical signal sothat it can be processed directly by a PLCsystem. The signal is supplied through theend cap via a pressure-tight cable gland.Alternatively various digital display unitsand transmitters can be connected.• zDigital display unit:Supply voltage 230 V AC(or 24 V DC )4-channel limit comparator4 optical coupler outputs2 relay contact outputs1 RS 232 interface(optionally with analogue output4 - 20 mA)• zTransmitter:Supply voltage 24 V DCAnalog output 4 - 20 mAThe maximum pressure must not exceed350 bar. The piston acceleration islimited to certain values according tomeasurement system forces, approx.7 ... 30 g, and is limited to a max. velocityof 0.5 m/s. The measurement system isnot suitable for rapid volume changes.For such loads, please contact theTechnical Dept. of our head office oryour local HYDAC agent. The preferredinstallation position is with the gas-side atthe top.The cable tension measurement systemcan only be fitted to the gas-side of thepiston accumulator.With magnetic flapper indication, theposition of a piston can be determined bythe colour of a set of magnetic flaps whichturn as the piston moves and which arevisible externally.A non-magnetic tube is fitted to the pistonaccumulator containing a cable, one endof which is fastened to the gas side of thepiston, and the other end is attached toa magnet. Along the length of the pistonaccumulator a housing is also fitted whichcontains red/white magnetic flaps.As the magnet moves up or down its tube,the flaps turn to their opposite colour toindicate the piston's position.When the piston moves towards the gasside,the indicator moves in the directionof the oil-side. In addition, reed switchescan be fitted to switch system parts ormeasurement scales can be fitted to thetube.The maximum piston velocity must notexceed 0.5 m/s. No more than 5 cyclesper day on average should be carried out.Piston accumulators with magnetic flapindication must only be installed vertically,gas-side at the top.With the piston position switch it is possibleto detect the piston position in a pistonaccumulator using ultrasound.The indicator can be retrofitted using aclamp. No other modification is required.It is therefore possible to install withoutdisrupting operation.The piston position switch detects thechange-over from oil to piston at whichpoint the signal is switched off. This is thecase if the piston is in the sound path orhas passed it.There are three different versionsavailable:• zStandard version for hydraulic fluid witha viscosity of up to 100 cSt.• zSpecial version for hydraulic fluid with aviscosity of up to 500 cSt.• zSpecial version for use in explosionprotected areas.Supply voltage18 ... 30 V DCSwitching output:NPN (or PNP)Detailed documentation for all pistonposition indicators is available on request.E 3.301.16/03.1243

2. TECHNICALSPECIFICATIONS2.1. EXPLANATORYNOTES2.1.1 Nominal volume [I]See table at Point 3.1.2.1.2 Eff. gas volume V 0[l]These differ slightly from thenominal volume and form thebasis of the calculations of theusable volume.See Point 3.1.1.2.1.3 Effective volume ∆V [l]The volume (on the fluid side)between the working pressurep 2 and p 1 .2.1.4 Permitted operatingtemperature (fluid)-10 °C ... +80 °C263 K ... 353 KStandard material, others onrequest2.1.5 Certificate codesAustralia F 1)Brazil U3 3)Canada S1 2)ChinaA9CISA6EU member states U 1)India U3 3)JapanPNew ZealandTSwitzerlandUUkraineA10USASothers on request1)Approval required in the individualterritories2)Approval required in the individualprovinces3)Alternative certificates possible2.2. MODEL CODE(also order example)SeriesNominal volume [l]Material and piston codePiston design type (see Point 1.3.)Piston material1 = aluminium2 = carbon steel3 = stainless steelMaterial of cylinder and end caps1 = carbon steel2 = carbon steel with surface protection3 = stainless steel6 = carbon steel (low temperature)Material of seals including piston seals2 = NBR / PTFE compound5 = TT-NBR / PTFE compound (low temperature)6 = FPM / PTFE compound8 = NBR / PUR (polyurethane)9 = special qualitiesCertificate codeU = PED 97/23/ECPermitted operating pressure [bar]SK350 – 20 / 2212 U – 350 AAG – VA – 18 A – 1 – 050Fluid connectionType of connection (see Table 1)Standard or specification of the type of connection (see Table 2 + 3)Size of connection (see Table 4 + 5)Gas side connection or gas valveType of connection (see Table 1)Standard or specification of the type of connection (see Table 2 + 3)(no letter for connection type V)Size of connection (see Table 4; 5 + 6)Piston diameter04 = 40 mm05 = 50 mm06 = 60 mm08 = 80 mm10 = 100 mm12 = 125 mm15 = 150 mm18 = 180 mm20 = 200 mm25 = 250 mm31 = 310 mm35 = 355 mm49 = 490 mmSupplementary equipment*A = electrical limit switch – 35 mm strokeB = electrical limit switch – 200 mm strokeC = electrical limit switch – 500 mm strokeK = protruding piston rodM = magnetic flap indicationS = cable tension measurement systemU = ultrasonic measurement systemE.. = special switch fixed or adjustableP = magnetic pistonUP.. = piston position switch(e.g. UP2 = 2 position switches, UPEX = ATEX version)Safety equipment*1 = burst disc (please give nominal pressure and temperature)2 = gas safety valve3 = temperature fusePre-charge pressure p 0[bar] at 20 °C*E 3.301.16/03.12*if required, please state at time of ordering!44

Table 1, Connection typeCode letter DescriptionAThreaded connection (female)BThreaded connection (male)FFlange connectionHProtruding flangeK, S Combination connection / Special connectionVGas valve typeTable 2, Threaded connection: standard or specificationCode letter DescriptionAThread to ISO 228 (BSP)BThread to DIN 13 or ISO 965/1 (metric)C Thread to ANSI B1.1 (UN..-2B, seal SAE J 514)DThread to ANSI B1.20.3 (NPTF)Table 3, Flange connection: standard or specificationCode letter DescriptionAFlanges to DIN standards (pressure range + standard)B Flanges to ANSI B 16.5CSAE flange 3000 psiDSAE flange 6000 psiEHigh pressure block flange (Bosch-Rexroth) PN320FHigh pressure block flange (AVIT, HAVIT)Table 4, Threaded model connection sizesTypeTab.2Code, sizeA B C E E F G H J K LA BSP 1/8" BSP 1/4" BSP 3/8" BSP 1/2" BSP 3/4" G 1 G1 1/4 G1 1/2 2BSP G2 1/2 3BSPB M10x1 M12x1.5 M14x1.5 M16x1.5 M18x1.5 M22x1.5 M27x2 M33x2 M42x2 M48x2 M60x2CD5/16-24UNF1/16-NPTF3/8-24UNF1/8-NPTF7/16-20UNF1/4-NPTFTable 5, Flange model connection sizesTypeTab.31/2-20UNF3/8-NPTF9/16-18UNF1/2-NPTF3/4-16UNF3/4-NPTF7/8-14UNF1-11 1/2NPTF1 1/16-12UNF1 1/4-11 1/2NPTF1 3/16-12UNF11/2-11 1/2NPTF1 5/16-12UNF2-11 1/2NPTFCode, sizeA B C E E F G H J K LA DN15 DN25 DN40 DN50 DN65 DN80 DN100 DN125 DN150 DN200B1/2" -1500#1" - 1500# 1 1/2" -1500#2" - 1500# 2 1/2" -1500#3" - 1500# 1/2" -2500#1" - 2500# 1 1/2" -2500#1 5/8-12UNF2 1/2 -NPTF2" - 2500# 2 1/2" -2500#C2 1/2" 3" 3 1/2" 4" 5"1/2" 3/4" 1" 1 1/4" 1 1/2" 2"D – – – – –EDN32 DN40 DN50 DN65 DN80 DN100 DN125 DN150 – DN25 –FTable 6, Gas valve modelsCode letter DescriptionAGas valve G3/4 male, with M28x1.5/M8BGas valve end connection M28x1.5/M8C Gas valve 1/2"-20 UNF, male, with M16x2 (ISO 10945)DGas valve M14x1.5, male, with male M16x1.5 (Minimess)EGas valve G3/4, male, with 7/8-14 UNF-VG8FGas valve end connection M42x1.5/M12Note:Application examples, accumulator sizing and extracts from approvals regulations on hydraulic accumulators can be found in thefollowing catalogue section:• zAccumulatorsNo. 3.000E 3.301.16/03.1245

3. Dimensions3.1. Piston accumulatorDiagram 1Volume Vmin. - max.SeriesCountry code U = PED 97/23/ECPermitt.operatingpressureØ D1 Ø D2 Length calculation 1)L = a + (b x V)ab[mm] [mm][l] [bar] [mm] [mm] [kg]Weight 2)min. - max.0.2 – 5 SK350 350 60 80 126 353.7 6 – 350.5 – 10 SK350 350 80 100 157 198.9 11 – 480.5 – 15 SK350 350 100 125 184 127.3 19 – 851 – 50 SK350 350 125 160 185 81.5 32 – 2802.5 – 70SK210 21021045 – 280150 18056.6SK350 350 234 49 – 2832.5 – 100SK210 21021070 – 346180262 39.3SK350 350 220 79 – 4582.5 – 125SK210 210SK350 350200 235 290 31.8 86 – 45210 – 200SK210 210286170 – 631250408 20.4SK350 350 300 200 – 86025 – 400 SK350 350 310 350 462 13.2 390 – 111025 – 400SK210 210404468 – 1338355534 10.1SK350 350 434 590 – 2048200 – 650SK210 210SK350 350490 580 700 5.3 1760 – 31801)The lengths calculated are usually rounded up or down in 5 mm increments2)Intermediate weights are possible, depending on the length/diameter requiredOther pressures, volumes, certificates etc possible on request.3.1.1 Effective gas volume V 0The gas volume V is larger than the nominal volume given in the tables in point 3.1. bythe amount shown below.Piston Ø D1 Piston design type1 2 3 4[mm]D [l]60 – 0.040 – 0.04080 – 0.044 0.081 0.044100 0.062 0.062 0.270 0.062125 – 0.169 0.546 0.169150 – 0.653 0.824 0.653180 1.213 1.213 1.286 1.213200 – 0.999 1.601 0.999250 3.034 3.034 2.617 3.034310 – 6.221 – 6.221355 4.514 4.514 – 4.514490 – 12.705 – 12.705E 3.301.16/03.1246

3.2. piston accumulatorwith electricallimit switchconnection for Charging and Testing Unit FPU1m1 = Motor1c1 = Motor contactor1e3 = Control cut-outMö = Solenoid switch - N/CMs = Solenoid switch - N/OVolume 2) Series Country code UØ D1Gas sideconnection 3)Fluid sideconnection 4)NAdditional weightA B C A B C[l] [mm] ISO228 [mm] [mm] [mm] [kg] [kg] [kg]0.20.510.5122.55SK350SK350SK35060 1)80 1)1002.55 4.85 7.157.5251562040G 3/4G 1lateralSK350 125 2.55 4.85 7.15SK350 150BSP3/4"2.60 4.90 7.2010SK210SK35020SK210SK350180 G 1 G 1 1/22.60 4.90 7.2050SK210SK3502040 SK350 200 G 1 2.65 4.95 7.25100209 439 679SK21050SK35080SK210SK350250 G 1 1/4 G 2 2.80 5.10 7.40120SK210SK350120150 SK350 310 G 1 1/42.90 5.20 7.50200130SK210SK350NW50180SK210SK350355 G 1 1/2 2.80 5.10 7.40250SK210SK350200400 SK350 490 G 2 3.00 5.30 7.606001)Electrical limit switch is not possible for these piston sizes.2)Volume details are examples, for others see Point 3.1.3)Standard connection for back-up type, others on request4)Others on requestfor further information, see Point 1.7.Table 7, Supplementary sealPistonØ[mm]alldiam.Type NBR FKM(Viton ® )Part no. Part no.12 00601078 0060110934 on requestNote:When ordering spare parts for the pistonaccumulator with electrical limit switch, thesupplementary seal must be ordered in additionto the seal kit (Point 4).E 3.301.16/03.1247

4. Spare parts4.1. Piston accumulator4.1.1 Piston type 1Description Qty. ItemPiston assembly 1)consisting of:Piston 1 10Seal ring 1 50Guide ring 2 60Centre seal 1 70Seal kit, completeconsisting of:Seal ring 2 40Centre seal 1 70(Support ring) (2) (110)O-ring 2 120O-ring 1 180Seal ring 1 200O-ring 1 2204.1.2 Piston type 2E 3.301.16/03.12Piston assembly (Table 8)PistonØNBR FKM PUR[mm] Part no. Part no. Part no.1 – – –60 2 03183495 – –3 – – 030093721 – – –80 2 03183496 03183497 –3 03016255 – 021199311 03128922 03128926 –100 2 03175476 03183117 –3 03016163 – 021155471 – – –125 2 03016232 03016253 –3 03016254 – 030161501 – – –150 2 03016228 03016229 –3 03016230 – 030162311 03141888 03182493 –180 2 02118451 02112535 –3 03046413 – 030462771 – – –200 2 03110811 03016215 –3 03016216 – 030162181 03128924 03128938 –250 2 00353980 00353981 –3 03009544 – 030161711 – – –310 2 03016195 03016197 –3 – – –1 03128925 03128939 –355 2 00356382 00354079 –3 – – –1 – – –490 2 03128989 03128990 –3 – – –PistonSeal kit, complete (Table 9)PistonØNBR FKM PUR[mm] Part no. Part no. Part no.1 – – –60 2 03090507 – –3 – – 030162101 – – –80 2 03041573 03015745 –3 03090788 – 030132301 03128940 03128944 –100 2 00363268 00363269 –3 03010398 – 021234141 – – –125 2 03116665 03016234 –3 03090870 – 021281041 – – –150 2 03016235 03016237 –3 03016236 – 030075461 03128941 03128945 –180 2 00363270 00363271 –3 03010399 – 021234151 – – –200 2 03110810 03016242 –3 03016241 – 031131271 03128942 03128946 –250 2 00363266 00363267 –3 03010401 – 030162131 – – –310 2 03016200 03016201 –3 – – –1 03128943 03128947 –355 2 00363272 00363273 –3 – – –1 – – –490 2 03104100 03128991 –3 – – –PistonPiston assembly 1)consisting of:Piston 1 10Seal ring 1 40Guide ring 2 60Centre seal 1 70Seal kit, completeconsisting of:Seal ring 1 40Guide ring 2 60Centre seal 1 70(Support ring) (2) (110)O-ring 2 120O-ring 1 180Seal ring 1 200O-ring 1 2204.1.3 Piston type 3Piston assemblyconsisting of:Piston 1 10Seal ring 1 70Guide ring 1 60Seal kit, completeconsisting of:Seal ring 1 70Guide ring 1 60(Support ring) (2) (110)O-ring 2 120O-ring 1 180Seal ring 1 200O-ring 1 2201)Item. 120, 180, 200 und 220 are supplied loose.Pressure resistant parts cannot be supplied asspares.Spare parts for piston type 4are available on request.48

4.2. AssemblyinstructionsBefore assembling or disassembling apiston accumulator or piston accumulatorstation, the system must always bedepressurized.The gas and fluid side must bedepressurized and the gas valveunscrewed or opened before theaccumulator is disassembled. Beforethe end caps are removed, ensure thatthe piston is moving freely. This may beachieved by using a rod. Only authorisedpersons should repair piston accumulatorswhere the piston is jammed.Piston accumulators with internaldiameters up to 250 mm are fitted with asecuring pin. This pin is to prevent the endcap being removed incorrectly.It must be taken out before removing theend cap.There may be a danger to life due to straycomponents.All work must only be carried out bysuitably trained staff.On no account must any welding, solderingor mechanical work be carried out on theaccumulator shell.Please read the Operating Manual!No. 3.301.CEAssembly sleevesfor piston accumulators (Table 11)PistonØ[mm]to fit the sealsType 1+260 0029743080 00244991100 00352198125 00370734150 02124157180 00350148200 03016276250 00290035310 02127304355 00354147490 3114220Piston to install the pistonØ[mm]60 0212018880 0035961410000290056 (M105x2)02117672 (M110x3)125 02128223150 0212416118000290049 (M186x3)02122356 (M190x4)200 03016284250 00290046310 02127305355 00290985490 03114219When replacing seals and/or pistons,please read the Operating andMaintenance Instructions (No. 3.301.B).5. NOTEThe information in this brochure relates tothe operating conditions andapplications described.For applications or operating conditionsnot described, please contact the relevanttechnical department.Subject to technical modifications.HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.301.16/03.1249

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Piston AccumulatorsSeries SK2801. DESCRIPTION1.1. FUNCTIONFluids are practically incompressible andcannot therefore store pressure energy.The compressibility of a gas (nitrogen)is utilised in hydraulic accumulatorsfor storing fluids. HYDAC pistonaccumulators are based on this principle.A piston accumulator consists of a fluidsection and a gas section with the pistonacting as the gas-proof screen. The gassection is pre-charged with nitrogen.The fluid section is connected to thehydraulic circuit so that the pistonaccumulator draws in fluid when thepressure increases and the gas iscompressed.When the pressure drops, thecompressed gas expands and forces thestored fluid into the circuit.1.2. Designgas valveend capcylinderpistonend capfluid connectionHYDAC piston accumulators consist of:• zA cylinder with very finely machinedinternal surface.• zEnd caps on the gas side and the oilside. Sealed with O-rings.• zA floating steel or aluminium piston.• zA sealing system adapted to theparticular application. The piston floatson two guide rings which preventmetal-to-metal contact between thepiston and the accumulator wall. Suitablematerials are also available for lowtemperature applications.1.3. Type of mountingHYDAC can provide suitable accumulatorclamps for the piston accumulator seriesSK280. The table at point 3 lists theappropriate clamps for each individualdiameter. In order to prevent deformationof the cylinder, we recommend that theaccumulators are mounted using twoclamps, one at each end cap.1.4. Advantages of theSK280• zOptimized production process, saving onmaterial and manufacturing costs• zReduced-weight series• zReduced installation space• zStandard gas valveM28x1.5 integrated into end cap(non-refillable version possible)• zEndurance tested(function and fatigue tests)1.5. Design pressure• zStandard 280 bar• zManufactured and tested toPED 97/23/EChigher pressures on request1.6. Sealing system• zPiston type 3: NBR/PUR• zTemperature range:-30 °C ... +80 °Cothers on request1.7. CommissioningPlease read the Operating Manual!• zPiston accumulatorsNo. 3.301.CEFor further information, please turn to thesection:• zPiston AccumulatorsNo. 3.301E 3.303.2/03.1251

2. Technical specifications2.1. Model code(also order example)SK280 - 1 / 3218 U - 280 AAD - VB - 05 - 030SeriesNominal volume [l]Material and piston codePiston design type(see Point 1.6.)Material: piston2 = Carbon steelMaterial: cylinder and end caps1 = Carbon steelMaterial: seals including piston seals8 = NBR/PUR (polyurethane)Certificate codeU = PED 97/23/ECPermitted operating pressure [bar]Fluid connectionAAD = Threaded connection to ISO 228Size G 1/2AAE = Threaded connection to ISO 228Size G 3/4AAF = Threaded connection to ISO 228Size G 1ACE = Threaded connection to SAE J 514Size 9/16-18 UNF, SAE #6ACF = Threaded connection to SAE J 514Size 3/4-16 UNF, SAE #8ACH = Threaded connection to SAE J 514Size 1 1/16-12 UN, SAE #12ACK = Threaded connection to SAE J 514Size 1 5/16-12 UN, SAE #16Gas side connection or gas valveVB = Gas valve type M28x1.5/M8 integrated into gas side end cap000 = Non-refillable version (see drawing, Point 3.1.) on requestPiston diameter05 = 50 mmPre-charge pressure p 0[bar] at 20 °C, must be clearly stated, if required!Special sizes and special versions on request.E 3.303.2/03.1252

3. DIMENSIONS3.1. Type -000-(non refillable)3.2. Type -VB-(refillable)Nominalvolume[l]D1[mm]D2[mm]A ±3[mm]FtoISO 228FtoSAE J 514Weight[kg]0.161609/16- 20.32 240 18UNF 2.50.5 50 60 3353.10.75 451 41 590 4.80.32205 G 1/233/4-0.5 265 3.516UNF0.75 355 4.260 701 445 5.11.5 620 6.42 800 7.80.52106.50.75 260 7.21 310 81.5 410 9.51 1/16-2 80 95 510 G 3/411.512UN2.5 605 133 705 14.53.5 805 164 905 17.50.7523511.71 265 12.51.5 330 14.32 395 1 5/16- 16100 120G 13 520 12UN 19.54 650 235 775 26.36 900 30Mountingclamps 1)3018442HRGKSM 0R 58-61/62 ST3018444HRGKSM 0R 70-73/73 ST444995HRGKSM 0R 92-95/96 ST444505HRGKSM 1R 119-127/124ST1)Clamps must be mounted near the end caps in order to prevent deformation of the cylinder. For furtherinformation see the following catalogue section: Supports for Hydraulic AccumulatorsNo. 3.5024. NOTEThe information in this brochure relates tothe operating conditions and applicationsdescribed. For applications and operatingconditions not described, please contactthe relevant technical department.Subject to technical modifications.HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.303.2/03.1253

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Diaphragm Accumulators1. DESCRIPTION1.1. FunctionFluids are practically incompressible andcannot therefore store pressure energy.The compressibility of a gas is utilised inhydraulic accumulators for storing fluids.HYDAC diaphragm accumulators arebased on this principle, using nitrogen asthe compressible medium.A diaphragm accumulator consists of afluid section and a gas section with thediaphragm acting as the gas-proof screen.The fluid section is connected to thehydraulic circuit so that the diaphragmaccumulator draws in fluid when thepressure increases and the gas iscompressed. When the pressure drops,the compressed gas expands and forcesthe stored fluid into the circuit.At the base of the diaphragm is a valvepoppet. This shuts off the hydraulic outletwhen the accumulator is completelyempty and thus prevents damage to thediaphragm.NOTE:HYDAC diaphragm accumulators whenfitted with a HYDAC Safety and Shut-offBlock comply with the regulations of thePressure Equipment DirectivePED 97/23/EC and the Germanregulations on health & safety at work(Betr.Sich.V.).See catalogue section:• zSafety and shut-off block SAF/DSVNo. 3.5511.2. DesignHYDAC diaphragm accumulators areavailable in two versions.1.2.1 Weld typeint. hex. locking screwpressure vesseldiaphragmvalve poppetvalve bodyThis consists of:• zWelded pressure vessel, rechargeableon the gas side or, alternatively,completely sealed. Fluid connectionavailable in various types.• zFlexible diaphragm to separate the fluidand gas sections.• zValve poppet set into the base of thediaphragm.1.2.2 Screw typeint. hex. locking screwpressure vessel1.2.3 Diaphragm materialsThe diaphragms are available in thefollowing elastomers:• zNBR (acrylonitrile butadiene rubber,perbunan),• zIIR (butyl rubber),• zFKM (fluoro rubber, Viton ® ),• zECO (ethylene oxide epichlorohydrinrubber).The material must be selected accordingto the particular operating fluid andtemperature.When choosing the elastomer, allowancesmust be made for the fact that the gascan cool down to below the permittedelastomer temperature if there are adversedischarge conditions (high pressure ratiop 2 /p 0 , high discharging velocity). This cancause cold cracking in the elastomer.The gas temperature can be calculatedusing the HYDAC Accumulator SimulationProgram ASP.1.2.4 Corrosion protectionFor use with chemically aggressive fluidsthe accumulator can be supplied withcorrosion protection, such as plasticcoating or a galvanic or chemical surfaceprotection. If this is insufficient, then almostall types can be supplied in stainless steel.1.3. Mounting positionOptional. However, if there is a risk ofcontamination collecting, a vertical positionis preferable (fluid connection at thebottom).diaphragmvalve poppetvalve bodyThis consists of:• zForged upper section with gas chargingconnection.• zForged lower section with fluidconnection.• zExchangeable flexible diaphragm toseparate the gas and fluid.• zVulcanized valve poppet set into thebase of the diaphragm.• zLock nut to hold the upper and lowersections of the accumulator together.E 3.100.24/03.1255

1.4. Type of mountingAccumulators up to 2 l can be screweddirectly inline.Where strong vibrations are expected, theaccumulator must be secured to prevent itworking loose. For weld type accumulatorswe recommend HYDAC support clamps.For screw type accumulators with lock nut,a suitable support console can be ordered.Additional male threads on the hydraulicconnection are available for screwing intomounting holes - see table 3.1.See catalogue section:• zSupports for Hydraulic AccumulatorsNo. 3.5021.5. General1.5.1 Permitted operating pressureSee tables 3.1. and 3.2.The permitted operating pressure candiffer from the nominal pressure for foreigntest certificates.1.5.2 Nominal volumeSee tables 3.1. and 3.2.1.5.3 Effective gas volumeCorresponds to the nominal volume of thediaphragm accumulator.1.5.4 Effective volumeVolume of fluid which is available betweenthe operating pressures p 2and p 1.1.5.5 FluidsMineral oils, hydraulic oils. Other fluids onrequest.1.5.6 Gas chargingAll accumulators are supplied with aprotective pre-charge.Higher gas pre-charge pressures areavailable on request (gas charging screwor sealed gas connection).Hydraulic accumulators must only becharged with nitrogen.Never use other gases.RISK OF EXPLOSION!1.5.7 Permitted operating temperature-10 °C ... +80 °C263 K ... 353 Kfor material code 112.Others on request1.5.8 Permitted pressure ratioRatio of maximum operating pressure p 2togas pre-charge pressure p 0.1.5.9 Max. flow rate of operating fluidIn order to achieve the max. flow rate givenin the tables, a residual fluid volume ofapprox. 10 % of the effective gas volumemust remain in the accumulator.1.5.10 Certificate codesHydraulic accumulators which are installedin countries outside Germany are suppliedwith the test certificates required in thatcountry. The country of installation must bestated at the time of ordering.HYDAC pressure vessels can be suppliedwith virtually any test certificate.Please note that the operating pressurecan differ from the nominal pressure.The following table contains a fewexamples of the codes used in the modelcode for different countries of installation:Australia F 1)Brazil U 3)Canada S1 2)ChinaA9CISA6EU member statesUIndia U 3)JapanPNew ZealandTSouth Africa U 3)Switzerland U 3)UkraineA10USASothers on request1)approval required in the individual territories2)approval required in the individual provinces3)alternative certificates possibleOn no account must any welding, solderingor mechanical work be carried out on theaccumulator shell. After the hydraulic linehas been connected it must be completelyvented. Work on systems incorporatinghydraulic accumulators (repairs,connecting pressure gauges etc.) mustonly be carried out once the pressure andthe fluid have been released.Please read the Operating Manual!No. 3.100 CENote:Application examples, accumulator sizingand extracts from approvals regulations onhydraulic accumulators can be found in thecatalogue section:• zAccumulatorsNo. 3.000E 3.100.24/03.1256

2. TECHNICAL SPECIFICATIONS2.1. Model code(also order example)SBO210 – 2 E1 / 112 U – 210 AK 050SeriesNominal volume [l]Type 2)Weld type:E1 = rechargeable M28x1.5E2 = sealed gas connection,with gas pre-charge as requested 4)E3 = rechargeable,gas valve M16x1.5 / M14x1.5Screw typeA6 = rechargeable M28x1.5,exchangeable diaphragmA3 = gas valve M16x1.5 / M14x1.5,exchangeable diaphragmMaterial code 2)depends on operating mediumStandard model = 112 for mineral oilsFluid connection1 = carbon steel3 = stainless steel 1.45714 = carbon steel with protective coating 1)6 = low temperature steelAccumulator shell0 = plastic coated1 = carbon steel1) 3)2 = carbon steel with protective coating4 = stainless steel 1.45716 = low temperature steelDiaphragm2 = NBR20 (acrylonitrile butadiene)3 = ECO (ethylene oxide epichlorohydrin)4 = IlR (butyl)5 = NBR21 (low temperature NBR)6 = FKM (fluoro rubber)7 = other (e.g. PTFE, EPDM ... on request)Certificate code 2)U = PED 97/23/ECFor other countries see tablePermitted operating pressure [bar]Fluid connection 2) formStandard connection = AK or ABe.g. Form AK = G 3/4for SBO210-2 see Point 3Pre-charge pressure p 0[bar] at 20 °C, must be stated clearly, if required! 4)1)only for screw type2)not all combinations are possible3)only parts in contact with the medium4)only for type E1 or E2, for scheduled ordersE 3.100.24/03.1257

3. Technical specifications3.1. Weld type accumulators– non-exchangeable diaphragms –3.1.1 DrawingsDiag. Type Gas side connection Fluid side connection*E1 E2 E3 AK AB1hex.hex.2 –3 on requesthex.hex.4 –* = alternative fluid connections on requestE 3.100.24/03.1258

3.1.2 DimensionsNom.vol. 1)Perm.press.ratioE 3.100.24/03.12SeriesCertificate code U RØDWeightQ 2)Standard fluid connection2 0Permitt. oper.pressure [bar]Form AKForm ABsteel steel [mm] [mm] [kg] [l/min] ISO 228 [mm] [mm] [mm] ISO 228 DIN 13 [mm] [mm] SW[l] p : pCarbon StainlessF ØG L B 1 F H L B 2 hex.0.075 8 : 1 250 250 – 91 64 0.7 38 G 1/2 – 14 21 3010.16 8 : 1210 210 180 103 74 0.838 G 1/2 – 14 21 30300 300 – 108 78 1.1not available10.32 8 : 1210 210 160 116 93 1.3300 300 – 120 96 1.895 G 1/2 – 14 21 30 10.5 8 : 1160 160 – 130 102 1.3210 210 – 133 105 1.795 G 1/2 – 14 21 30 G 1/2 M33x1.5 14 37 41 10.6 8 : 1330 330 – 151 115 3.34141 195 G 1/2 34 14 21 G 1/2 M33x1.5 14 37350 350 – 130 121 3.5 50 50 30.7 8 : 1 100 100 – 151 106 1.8 95 G 1/2 34 14 21 41 G 1/2 M33x1.5 14 37 41 10.75 8 : 1140 140 – 142 116 1.814 37210 210 140 147 121 2.821195 G 1/2 34 14 41 G 1/2 M33x1.541250 250 – 152 126 3.615 42330 330 – 140 126 4.0 26 318 : 1 200 200 – 159 136 3.62195 G 1/2 34 14 41 G 1/2 M33x1.5 14 37 1250 250 – 192 4.4 41 24 : 1126330 330 – 169 4.8 26 15 42 41.4 8 : 1140 140 – 173 145 3.9414210 210 – 178 150 5.4213795 G 1/2 34 14 41 G 1/2 M33x1.541 1250 250 – 185 153 5.915330 330 – 172 155 7.6 33 42 3100 100 100 190 160 4.08 : 11210 210 – 198 167 6.628332150 G 3/4 44 16 46 G 3/4 M45x1.5 16 464 : 1 250 250 – 232 153 7.4 28 : 1 330 330 – 181 172 9.2 43 42 32.8210 210 – 250 167 8.2283324 : 1 250 250 – 250 170 7.8150 G 3/4 44 16 46 G 3/4 M45x1.5 16 46237434330 330 –172 11.0426 : 1 231 44 33.5 4 : 1250 210 – 306 170 11.2 28332150 G 3/4 44 16 46 G 3/4 M45x1.5 16 46330 330 – 274 172 13.8 44 42 450 – 50 294 158 5.04 4 : 1250 – 180 306 170 11.2 150 G 3/4 44 16 44 46 G 3/4 M45x1.5 16 33 46 21)Others on request2)Max. flow rate of operating fluidhex.SWDiag.59

3.2. Screw type– exchangeable diaphragm –3.2.1 DrawingsType A6Type A3Fluid connection AKalternative fluid connections on requestFig. 53.2.2 DimensionsNom.vol. 1)Perm.press.ratioSeriesCertificate code UPermitt. oper.pressure [bar][l] p 2 : p 0 steelCarbonWeightA B ØD ØL M N O ØP R Q 2) Standard fluidconnectionStainlesssteel [kg] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [l/min]Form AKFISO 2280.1 10 : 1 500 500 – 1.9 110 30 95 – 53 35 – – – 95 G 1/2 14 – 36500 – 3.9 11556500129 20 92 56–0.25 10 : 1 – 350 4.9 125 60 – – – 95 G 1/2 14 36750 – 750 9.0 136 11 153 114 57.5 63 270.6 10 : 1 450 450 250 5.7 170 19 140 115 68 57 – – – 95 G 1/2 14 34 411.3 10 : 1 400 400 – 11.2 212 28 199 160 97 65 M8 180 10 150 G 3/4 16 44 502 10 : 1 250 250 180 11.4 227 17 201 168 101 64 M8 188 10 150 G 3/4 16 44 502.8 10 : 1 400 400 – 22.0 257 30 252 207 106 80 M8 230 10 150 G 3/4 16 44 504 10 : 1 400 400 – 34.0 284 30 287 236 127.5 90 M8 265 10 150 G 3/4 16 44 501)Others on request2)Max. flow rate of operating fluid4. NoteThe information in this brochure relates to the operating conditions andapplications described. For applications and operating conditions notdescribed, please contact the relevant technical department.Subject to technical modifications.S[mm]ØG[mm]KSWDiag.5E 3.100.24/03.1260HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.com

Metal Bellows Accumulatorsfor Heavy Diesel Engines1. DESCRIPTIONIn the fuel injection system of heavy dieselengines (e.g. marine engines and enginesfor power plants / two and four-stroke),pressure fluctuations are generated duringthe injection process by the high pressurepumps.In most heavy diesel engines each cylinderhas its own injection pump. During thephases of fuel extraction from the supplyline, compression and injection as well asthe release of unused fuel into the returnline, cyclic pressure pulsations can result.Example:600 [rpm] x 8 [cylinders]60 [s] x 2 [4-stroke]= 40 [Hz]The supply line and the return line are at alower pressure than that required for fuelinjection and in such dual-pipe systems theabove-mentioned pressure fluctuations cancause problems, depending on the size ofthe pressure variations. It is for this reasonthat superimposed pressure fluctuationsfrom 0 to approx. 13 bar can occur in a4.5 bar return line (see the graph, point 2).In other systems pressure peaks of over50 bar have been measured.This fluctuating pressure with itsunacceptable pressure peaks not onlycreates an additional stress on the pipesystem but also an additional load for allintegrated fittings and equipment. Valves,filters, measurement and monitoringdevices, e.g. viscosity meters, ... can beseriously impaired or damaged, sometimeseven irreparably.Until now a standard method for reducingor eliminating the pulsations has been touse hydraulic accumulators with nitrogenas the damping element and an elastomerdiaphragm or bladder as the separatingelement between the gas and the fuel.The best damping results may be obtainedby installing one damper in the supplyline and one in the return line as closeas possible to the engine. However,such standard diaphragm and bladderaccumulators have two main limitations:Problems with elastomer resistance tofuels and high temperatures.Fuels other than diesel oil, such as bio-oilsor heavy fuel oil require higher injectiontemperatures. These can reach 160 °C.Even FKM (Viton ® ) used for the diaphragmor bladder has compatibility problemsunder such extreme conditions.Gas loss through the elastomerThe accumulator gradually loses gasthrough the elastomer and the higher thetemperature the higher the gas loss. If it isnot possible to recharge the accumulatorregularly, its function will deteriorate andthe diaphragm or bladder will split.These last two disadvantages can only beprevented by a relatively high investmentin monitoring and maintenance. Dependingon the type of fuel and its operatingtemperature, it can be necessary toreplace the elastomer part after specificintervals.HYDAC set itself the task of developinga pulsation damper without the problemsoutlined and which above all would alsoavoid the problems generated by othersolutions (e.g. piston accumulators, springactuatedaccumulators, accumulators withelastic damping elements inside). Thesesolutions have problems either with frictionand abrasion or fuel leakage. One of theprime targets was therefore to relieve thesystem operator of the burden of excessivemonitoring and maintenance.E 3.304.1/03.1261

The recently developed solution fromHYDAC is the Metal Bellows Accumulator.Instead of a bladder or diaphragm, a metalbellows is used as the flexible separatingelement between fluid and gas. Thisbellows is resistant to all conventionalfuels over a very wide temperature range.Heavy fuel oil at temperatures of up to160 °C is no problem for these dampers.The metal bellows is welded to the othercomponents and is therefore completelygas-tight. It is able to move up and downinside the accumulator without any frictionor abrasion and it can operate for a verylong time (years) with just one adjustment.Monitoring and maintenance for thistype of damper is therefore reduced to aminimum.A diverting block is built into the fuel sideof the damper which forces the fuel directlyinto the accumulator, thereby increasingthe damping efficiency considerably. If twodampers are fitted to the fuel system (inboth supply and return line), no pressurefluctuations can leave the engine beforepassing through one of the metal bellowsdampers.With this metal bellows accumulator,HYDAC has developed a competitivelypriceddamper which is unrivalled interms of maintenance. The purchasecosts will be recouped within a short timeand as a result of reduced maintenance,the availability of the entire system isincreased.For further benefits, see below.1.1. BENEFITS OF THESM50P-...• zMaintenance-free– extremely gas-tight– frictionless parts (non-wearing)• zFluid resistant across whole temperaturerange• zCost-effective:"fit and forget"2. PRESSURE GRAPHpressure in the return line [bar]141312111098765432100 0,05 0,1 0,15 0,2 0,25 0,3 0,35 0,4 0,45 0,5green = without damperblue = with dampertime [s]3. INSTALLATION of the SM50P-...3.1. DIAGRAMmetalbellowsdampermetalbellowsdamperheavy diesel engine∆p = 0,5 bar∆p = 12,5 barhigh pressureinjection pumpssupply linereturn line3.2. MODEL3-D standard model, e.g. for inline installation.E 3.304.1/03.12Special connections on request62

4. Technicalspecifications4.1. TECHNICAL DATAOperating pressure:3 ... 12 bar (others on request)Max. pre-charge pressure:4 bar (at max. operating temperature)Design temperature range:-10 °C ... +160 °COperating fluids:Diesel and heavy fuel oil, biofuelsTotal volume:3.8 litresEffective gas volume:0.5 litre (nitrogen)Gas-side fluid pre-charge:0.6 litre (ethylene glycol)Fluctuating volume:max. 0.04 litres (others on request)Material:Carbon steel (primed externally)Design and Approval:PED / ABS / DNV / GL /LR / BV / AS1210 / ...Fluid connection:SAE 1 1/4" - 3000 PSISAE 2" - 3000 PSISAE 3" - 3000 PSIGas connection:M28x1.5 for Universal charging andtesting unit FPU-1Part no.: 3398235Mounting position:Vertical (gas connection at top),others on requestWeight:22 ... 33 kg depending on the connectionsize4.2. Model code(example)Type / SeriesType code_ = accumulator without diverting block*L = light-weight accumulator*P = damper with diverting blockCapacity [l]VersionW = convoluted bellowsM = diaphragm bellows*Type of shellA = screw typeE = weld type*G = formed type*SM50 P – 0.5 W E 1/ 116 U – 50 AAJ – 2.5Type of gas-side connection1 = gas pressure adjustable (M28x1.5)2 = gas pressure pre-set, non-adjustable gas locking screw*3 = gas pressure adjustable (M16x1.5)Material codeFluid connection1 = carbon steel2 = carbon steel with corrosion protection3 = stainless steelAccumulator shell1 = carbon steel2 = carbon steel with corrosion protection4 = stainless steelSeal material0 = no seal2 = NBR*5 = low temperature NBR*6 = FKMCertificate codeU = PEDfor others, see catalogue section no. 3.000Permitted operating pressure [bar]Fluid connectionsee tables in catalogue section 3.301, Piston AccumulatorsPre-charge pressure p 0 [bar] at 20 °C,must be clearly stated, if required!* currently only on requestE 3.304.1/03.1263

4.3. Dimensions 4.4. Accumulator connectionDimension[mm]SAE 1 1/4"(FCD)*SAE 2"(FCF)A 274 294 333B 74 94 134C 102 120 133* FCD = formerly ADSAE 3"(FCH)SM50P-3.8A6/116...FCDSAE 1 1/4" – 3000 psiSM50P-3.8A6/116...FCFSAE 2" – 3000 psiItem Designation1 Accumulator lower section2 Accumulator cover plate3 Metal bellows4 Bowl5 O-ring6 Nitrogen (N 2) andfluid (e.g. ethylene glycol)7 Seal ring8 Adjustable locking screw9 O-ring10 Protective capSM50P-3.8A6/116...FCHSAE 3" – 3000 psiE 3.304.1/03.1264

4.5. FLOW RATES / TEMPERATURE DEPENDENCYSeriesSM50P-...BoreFlangeSAE [inch] -3000 psi [mm]Max. flowrateQmaxWeight Ht. Ext. diam.[m³/h] [kg] [mm]1 1/4 ...FCD 30 < 8 22 274Da[mm]5. NOTEThe information in this brochure relates tothe operating conditions andapplications described.For applications and operating conditionsnot described, please contact the relevanttechnical department.Subject to technical modifications.2 ...FCF 50 8 - 21 25 2942003 ...FCH 73 > 21 33 3334.6. BUTT WELD AND SOCKET WELD FLANGESPressure: 3000 PSISeal: FKM (Viton ® )Series D1 D2 L1 L2 L3 LA LB LX LY DB ScrewsSAE[inch] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]1 1/4Butt weldflange31 42.8 41 21 3.0 < 74 @ 80 30.2 58.7 10.5 M10x402 50 61.0 45 25 5.5 < 94 @ 103 42.9 77.8 13.5 M12x453 73 89.0 50 27 8.0 < 134 @ 135 61.9 106.4 17.0 M16x50Series D1 D2 L1 L2 L3 LA LB LX LY DB ScrewsSAE[inch] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]1 1/4Socket weldflange31 42.8 41 21 20 < 74 @ 80 30.2 58.7 10.5 M10x402 50 61.0 45 25 24 < 94 @ 103 42.9 77.8 13.5 M12x453 73 90.5 50 27 28 < 134 @ 135 61.9 106.4 17.0 M16x50HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.304.1/03.1265

E 3.304.1/03.1266

Hydraulic Dampers1. Hydraulic dampers1.1. DESCRIPTION1.1.1 Mode of operationThe pressure fluctuations occurring inhydraulic systems can be cyclical or oneoffproblems due to:• zflow rate fluctuations fromdisplacement pumps• zactuation of shut-off and control valveswith short opening and closing times• zswitching pumps on and off• zsudden linking of spaces with differentpressure levels.HYDAC hydraulic dampers areparticularly suitable for damping suchpressure fluctuations.Selecting the most suitable hydraulicdamper for each system ensures that• zvibrations caused by pipes, valves,couplings etc are minimised andsubsequent pipe and valve damage isprevented• zmeasuring instruments are protectedand their performance is no longerimpaired• zthe noise level in hydraulic systems isreduced• zthe performance of machine tools isimproved• zinterconnection of several pumps inone line is possible• zan increase in pump rpm and feedpressure is possible• zthe maintenance and servicing costscan be reduced• zthe service life of the system isincreased.1.2. Application1.2.1 Pulsation dampingTYPE SB...P / SBO...PPressurePressurePressurewithout damperTimewith accumulator(standard connection bladder accumulator)Timewith accumulatoras pulsation damperE 3.701.12/03.12TimeGeneralThe HYDAC pulsation damper• zprevents pipe breaks caused by materialfatigue, pipe oscillations and irregularflow rates,• zprotects valves, control devices andother instruments,• zimproves noise level damping.ApplicationsThe pulsation damper is particularlysuitable for:hydraulic systems, displacement pumpsof all types, sensitive measurement andcontrol instruments and manifolds inprocess circuits in the chemical industry.Mode of operationThe pulsation damper has two fluidconnections and can therefore be fitteddirectly inline.The flow is directed straight at the bladderor diaphragm by diverting it in the fluidvalve. This causes direct contact ofthe flow with the bladder or diaphragmwhich, in an almost inertialess operation,balances the flow rate fluctuations via thegas volume.It particularly compensates for higherfrequency pressure oscillations. The prechargepressure is adjusted to individualoperating conditionsConstructionThe HYDAC pulsation damper consists of:• zthe welded or forged pressure vesselin carbon steel; available with internalcoating or in stainless steel forchemically aggressive fluids;• zthe special fluid valve with inlineconnection, which guides the flowinto the vessel (threaded or flangeconnection);• zthe bladder or diaphragm in variouselastomers as shown under 1.4.1.InstallationAs close as possible to the pulsationsource. Mounting position preferablyvertical (gas valve pointing upwards).67

1.2.2 Suction flow stabiliserType SB...S1.2.3 Shock absorberType SB...Awithout damperwithout damperPressurePressureGeneralThe HYDAC suction flow stabiliser• zimproves the NPSH value of the system;• zprevents cavitation of the pump;• zprevents pipe oscillations.ApplicationsMain application areas are piston and diaphragm pumps in publicutility plants, reactor construction and the chemical industry.Mode of operationTrouble-free pump operation is only possible if no cavitationoccurs in the pump suction and pipe oscillations are prevented.A relatively high fluid volume in the suction flow stabiliser inrelation to the displacement volume of the pump reduces theacceleration effects of the fluid column in the suction line. Also anair separation is achieved due to the extremely low flow rate in thesuction flow stabiliser and the deflection on a baffle. By adjustingthe charging pressure of the bladder to the operating conditions,the best possible pulsation damping is achieved.ConstructionThe HYDAC suction flow stabiliser consists of a welded vessel insteel or stainless steel.Inlet and outlet are on opposite sides and are separated bya baffle. The upper part houses the encapsulated bladder. Inaddition, there is a vent screw in the cover plate and a drainagefacility on the bottom.InstallationAs close as possible to the suction inlet of the pump. Mountingposition vertical (gas valve pointing upwards).E 3.701.12/03.12PressureTimewith accumulator (standard bladder accumulator)Timewith accumulator as suction flow stabiliserPressure PressureTimewith shock absorberTimeTimeGeneralThe HYDAC shock absorber• zreduces pressure shocks;• zprotects pipelines and valves from being destroyed.ApplicationsThe accumulators are particularly suitable for use in pipelines withquick-acting valves or flaps and whilst pumps are being switchedon and off.They are also suitable for energy storage in low pressureapplications.Mode of operationSudden changes in pipeline flow, such as those caused by pumpfailure or the closing or opening of valves, can cause pressureswhich are many times higher than the normal values.The shock absorber prevents this by converting potential intokinetic energy and vice versa. This prevents pressure shocks andprotects pipelines, valves, control instruments and other devicesfrom destruction.ConstructionThe HYDAC shock absorber consists of:• zthe welded pressure vessel in carbon steel with or withoutcorrosion protection or in stainless steel;• zthe connection including perforated disc which prevents theflexible bladder from extruding from the vessel, and the flange;• zthe bladder in various elastomer qualities as shown under point1.4.1 with built-in gas valve, which is used for charging pressurep 0and for possible monitoring activities.Special modelShock absorbers can also be in the form of diaphragm or pistonaccumulators. Available on request.InstallationAs close as possible to the source of the erratic condition.Mounting position vertical (gas valve pointing upwards).68

1.3. Sizing1.3.1 Pulsation damper and suction flow stabiliserV 0V 0suction sideOn the suction and pressure side ofpiston pumps almost identical conditionsoccur regarding irregularity of the flowrate. Therefore the same formulae fordetermining the effective gas volume areused for calculating the damper size. Thatin the end two totally different dampertypes are used is due to the differentacceleration and pressure ratios on thetwo sides.Not only is the gas volume V 0a decisivefactor but also the connection size of thepump has to be taken into account whenselecting the pulsation damper.In order to avoid additional variations incross-section which represent reflectionpoints for vibrations, and also to keeppressure drops to a reasonable level, theconnection cross-section of the dampermust be the same as the pipeline.The gas volume V 0of the damper isdetermined with the aid of the formula foradiabatic changes of state.By giving the residual pulsation or the gasvolume, the damper size can be calculatedwith the aid of the HYDAC software ASP(Accumulator Simulation Program). Theresults can then be printed out or the datafiles can be stored in ASP format.The ASP-program is available free ofcharge via our website www.hydac.com orvia E-Mail to speichertechnik@hydac.com.pressure sideDesignations:DV = fluctuating fluid volume [l]DV = m • qq = stroke volume [l]dκq = π • 2• hκ4d κ= piston diameter [dm]h κ= piston stroke [dm]m = amplitude factorm = DV qz = no. of compressions / effectivecylinders per revolutionx = residual pulsation [± %]κ = isentropic exponentΦ = pressure ratio of pre-charge pressureto operating pressure [0.6 ... 0.9]Φ = p 0p m∆p = height of pressure fluctuations∆p = p 2- p 1[bar]Formulae:V=ΔV0 1 1κκΔV = m • qx [ ]Φ Φ−xx1−1+100 100p1−pm± % = • 100pmp2−pm= •100pmE 3.701.12/03.1269

Isentropic exponent κ dependent on pressure and temperature:Solution:a) Determining the required suction flowstabiliserV=ΔV0 1 1κκΦ Φ−xx1−1+100 100Isentropic exponent κπ • 0.720.035•V 0=411.40.61 2 .−5100• 10 .0.6−1 2 .+510011.4V 0= 0.54 lSelected: SB16S-25 with 1 l gas volumeb) Determining the required pulsationdamperm-values for piston pump(others on request):m-valuez single acting double acting1 0.550 0.2502 0.210 0.1203 0.035 0.0184 0.042 0.0105 0.010 0.0066 0.018 0.0017 0.0058 0.0109 0.001Temperature [°C]Calculation exampleGiven parameters:Single-acting 3-piston pumpPiston diameter: 70 mmPiston stroke:100 mmMotor speed: 370 min -1Output:427 l/minOperating temperature: 20 °COperating pressure- Outlet: 200 bar- Inlet: 4 barRequired:a) Suction flow stabiliser for a residualpulsation of ± 2.5%b) Pulsation damper for a residualpulsation of ± 0.5%V=ΔV0 1 1κκΦ Φ−xx1−1+100 100π • 0.720.035•V 0=412.00.71 0 .−5100V 0= 3.2 lSelected: SB330P-4• 10 .0.7−1 0 .+510012.0E 3.701.12/03.1270

1.3.2 Shock absorberPressure shock produced when a valve is closed without a hydraulic accumulatorv = v maxv < v maxPRESSURE SHOCKP = maximumv = 0Determining the required damper sizeThe accumulator must absorb the kineticenergy of the fluid by converting it intopotential energy within the pre-determinedpressure range. The change of state of thegas is adiabatic in this caseV02m • v • 0.4=−p κ22 • p1• −1 • 10p11 1 2p•p1κ1m (kg) = weight of fluid in the pipelinev (m/s) = velocity of the fluidp 1(bar) = zero head of the pumpp 2(bar) = permitted operating pressurep 0(bar) = pre-charge pressureA special calculation program to analysethe pressure curve is available for sizingduring pump failure or start-up and formanifolds.0v = 0v = 0Simplified pressure shock calculation forthe closing of a valve.Estimate of Joukowsky's max.occurring pressure shock∆p(N/m²) = ρ • a • ∆vρ (kg/m³) = fluid density∆v = v - v 1∆vv (m/s)v 1(m/s)a (m/s)a (m/s) == change of fluid velocity= fluid velocitybefore the changein its condition= fluid velocityafter the changein its condition= propagation velocityof pressure wave11 Dρ• +K E•eK (N/m²) = compression modulus of thefluidE (N/m²) = modulus of elasticity ofpipelineD (mm) = internal diameter of pipelinee (mm) = wall thickness of the pipelineThe pressure wave runs to the other end ofthe pipeline and will reach the valve againafter time t (reflection time), whereby:t (s) = 2 • LaL (m) = length of the pipelineT (s) = effective operating time(closing) of the valveIf T < t then:pmax = p 1+ ∆pIf T > t then:tpmax = p 1+ ρ • a • ∆v •TE 3.701.12/03.1271

Calculation exampleRapid closing of a shut-off valve in are-fuelling line.Given parameters:Length of the pipeline L:2000 mNW of pipeline D:250 mmWall thickness of pipeline e:6.3 mmMaterial of pipeline:SteelFlow rate Q:432 m³/h = 0.12 m³/sDensity of medium ρ:980 kg/m³Zero head of pump p 1:6 barMin. operating pressure p min:4 barEffective closing time of the valve T:1.5 s (approx. 20% of total closing time)Operating temperature:20 °CCompression modulus of the fluid K:1.62 × 10 9 N/m²Elasticity modulus (steel) E:2.04 × 10 11 N/m²Required:Size of the required shock absorber, whenthe max. pressure (p 2) must not exceed10 bar.Solution:Determination of reflection time:a =a =2 • L 2 • 2000t = = = 3. 575 s *a 1120* since T < t the max. pressuresurge occurs and the formulaas shown in Point 1.3.2.must be used.∆ p= ρ • a • ∆v∆ p= 980 • 1120 • (2.45-0) •10 -5= 26.89 barp max= p 1+ ∆ pp max= 6 + 26.89 = 32.89 barDetermining the requiredgas volume:p 0≤ 0.9 • p min≤ 0.9 • 5 = 4.5 barp 0ρ•1980 •1+2509 11162 . • 10 2. 04 • 10 • 6.3a = 1120 m/s1 D+K E•e1Qv =A0.12v = = 2.45 m/s20. 25 • π42m • v • 0.4 pV0=•1−pp1 κ222 • p1• −1 • 10p1101κwith m= V • ρ =π 2• D • L • ρ4π •220 . 25 • 2000 • 980 • 2 . 45 • 0 . 4V40=•1−11 4 22 • 7 •11 .−1 • 10774.511.4V 0= 1641 lSelected:4 off shock absorbersSB 35AH-450.E 3.701.12/03.1272

1.4. TECHNICAL DATA1.4.1 MODEL CODE (also order example)Pulsation damper, suction flow stabiliser, shock absorberSB330 P – 10 A 1 / 112 U – 330 AlSeriesSB...SBO...= with bladder= with diaphragmTypeA = shock absorberAH = high flow shock absorberP = pulsation damperPH = high flow pulsation damperS = suction flow stabiliserNominal volume [I]Fluid connectionA = threaded connectionE = threaded connection for welded construction (diaphragm accumulators only)F = flange 4)Type code1 = standard model (not for threaded construction)2 = back-up model 1)6 = standard model for thread-type diaphragm accumulatorsof the type SBO...P-...A6Material code 2)depends on operating mediumStandard model = 112 for mineral oilsFluid connection1 = carbon steel2 = high tensile steel3 = stainless steel (Niro)4 = chemically nickel-plated (internal coating) 1)6 = low temperature steelAccumulator shell0 = plastic (internal coating) 1)1 = carbon steel2 = chemically nickel-plated (internal coating) 1)4 = stainless steel (Niro) 1)6 = low temperature steelAccumulator bladder/diaphragm 3)2 = NBR20 (acrylonitrile butadiene)3 = ECO (ethylene oxide epichlorohydrin)4 = IlR (butyl)5 = NBR21 (low temperature NBR)6 = FKM (fluoro rubber)7 = other (e.g. PTFE, EPDM)Certification code 2)U = PED 97/23/ECPermitted operating pressure [bar]ConnctionAl = ISO 228 (BSP), standard connectionBl = DlN 13 to ISO 965/1 (metric) 4)Cl = ANSI B1.1 (UNF thread,sealing to SAE standard) 4)Dl = ANSI B1.20 (NPT thread) 4)SBO250P-0.075E1 and for SBO210P-0.16E1:AK = ISO 228 (BSP), standard connection1)Not available for all models2)Not all combinations are possible3)When ordering spare bladder, please state diameter of the smaller shell port4)Please give full details when orderingE 3.701.12/03.1273

1.4.2 GeneralOperating pressureSee tables (may differ from nominalpressure for foreign test certificates).Nominal volumesSee tablesEffective gas volumeSee tables, based on nominal dimensions.This differs slightly from the nominalvolume and must be used when calculatingthe usable volume.On the diaphragm accumulator, theeffective gas volume corresponds to thenominal volume.Usable volumeVolume of fluid which is available betweenthe operating pressures p 2and p 1.FluidsMineral oils, hydraulic oils, non-flam fluids,water, emulsions, fuels.Others on request.Gas chargeHydraulic accumulators must only becharged with nitrogen.Never use other gases.RISK OF EXPLOSION!When supplied, the accumulator is onlypre-charged for storage purposes. Higherpre-charge pressures are possible byarrangement.Permitted operating temperature-10 °C ... +80 °C263 K ... 353 Kwith material code 112.Other media on request.Permitted pressure ratioRatio of maximum operating pressurep 2to gas pre-charge pressure p 0.See catalogue section:• zAccumulatorsNo. 3.000General safety instructionsOn no account must any welding, solderingor mechanical work be carried out on theaccumulator shell.After the hydraulic line has beenconnected it must be completely vented.Work on systems with hydraulic dampers(repairs, connecting pressure gauges etc)must only be carried out once the pressureand the fluid have been released.Please read the Operating Manual!• zBladder AccumulatorsNo. 3.201.CE• zDiaphragm AccumulatorsNo. 3.100.CE• zPiston accumulatorsNo. 3.301.CEE 3.701.12/03.1274

1.4.3 Pulsation damperSB330/550P(PH)-... SB800P-... SB1000P-...Dimensions SBNominalvolume[l]11.52.5Max. operatingpressure*[bar]Effectivegasvolume[l]Weight[kg]A[mm] B[mm]Ø D[mm]E[mm]H[mm]J 2)threadISO 228Series33011 365 80 11857SB330P1.0120550 13 384 70 121 53 G 1 1/4 SB550P800 3) 36 346 – 160 – 55 SB800P1.31000 3) 1)94 414 – 215 – 49 SB1000P330 2.4 16 570 80 118550 2.5 20 589 70 121 120 53 G 1 1/4 SB550P4 330 3.75 550 4.9 26 917 70 12163305.710 9.357SB330P18 455 8057 SB330P17126 491 100 150 85 G 1 1/2 SB330PH20 559 8028 59340 62010017112053SB550PG 1 1/457 SB330P85 G 1 1/2SB330PHSB330P50 652 130x140 100 SAE2"-6000 PSI SB330PH1312.0 48 712SB330P100 85 G 1 1/233070 920 150SB330P20 18.422980 952 130x140 100 SAE2"-6000 PSI SB330PH2423.6 82 986SB330P100 85 G 1 1/2330100 1445 SB330P32 33.9110 1475 130x140 100 SAE2"-6000 PSI SB330PH* Certification to PED 97/23/EC1)M56x4, high pressure connection DN 16, others on request2)Standard connection code = AI, others on request3)Special model, on requestE 3.701.12/03.1275

SBO...P...ESBO...P...A6Dimensions SBOE 3.701.12/03.12NominalvolumeMax. operatingpressure*Carbonsteel* Certification to PED 97/23/EC1)Standard connection code = AI, others on request( ) Brackets indicate different dimensions for stainless steel version (NIRO)Weight A B Ø D E H J 1)threadStainlesssteel(NIRO)[bar] [kg] [mm] [mm] [mm] [mm] [mm] ISO 228[l] [bar]0.075 250 – 0.9 131 – 640.16180 1.0 143 – 740.32 210 160 2.6 17593500.5 – 3.0 192 1050.6 330 – 5.6 22211541 hex. 13 G 1/480 25 G 1/2SeriesSBO250P-...E1SBO210P-...E1SBO330P-...E10.75 210 140 5.1 217 121 SBO210P-...E11.0 200 – 6.0 231 136 SBO200P-...E11.42.0140 – 6.2 244 145 SBO140P-...E1210 – 7.7 250 150 SBO210P-...E1250 – 8.2 255 60 153 105 30 G 1 SBO250P-...E1100 100 6.3 261 160 SBO100P-...E1210 – 8.9 267 167 SBO210P-...E13.5 250 – 13.5 377 170 SBO250P-...E14.0 –50 7.9 368 158 SBO50P-...E1250 13.5 377 170 SBO250P-...E10.25 500 350 5.2 (6.3) 162 50 115 (125) 800.6 330 250 8.9 (9.1) 2021.3 400 – 13.8 267 199140 (142) 9525G 1/2SBO500P-...A6SBO450P-...A6SBO400P-...A62.0 250 180 15.6 285 60 201 G 1 SBO250P-...A6105 302.8– 24.6 308 252400SBO400P-...A64.0 – 36.6 325 287weld-typethread-type76

Pulsation dampers for aggressive mediaSBO...P-...A6/347...(PTFE)SBO...P-...A4/777... (PVDF/PTFE)Pulsation damper in stainless steel with PTFE coated diaphragmand PTFE or FFKM seals. Also available without connectionblock.Certification toPED 97/23/ECPulsation damper in PVDF with PTFE-coated diaphragm.Permitted operating temperature:-10 °C ... +65 °CPermitted pressure ratio p 2: p 0= 2 : 1Permitted operating temperature:-15 °C ... +80 °CPermitted pressure ratio p 2: p 0= 2 : 1Nominalvolume[l]Max.operatingpressure[bar]Weight[kg]H[mm]H1[mm]Nominalvolume[l]Max.operatingpressure[bar]Weight[kg]A[mm] B[mm]Ø D[mm]E[mm]H[mm]J 1)threadISO 2280.210 5.7 128 2016256.5 130 180.20.540 11 140210250 27 197 2306040 12 165 210250 26 200 230105 30 G 10.510 6.0 168 2016256.8 170 191)Standard connection code = AI, others on requestE 3.701.12/03.1277

Spare partsSB...PDescriptionItemBladder assembly*consisting of:Bladder 2Gas valve insert 3Retaining nut 4Cap nut 5Valve protection cap 6O-ring 7Seal kit*consisting of:O-ring 7Washer 15O-ring 16Support ring 23O-ring 27O-ring 47O-ring 48Anti-extrusion ring* 14Gas valve insert* 3* recommended sparesDescriptionItemConnection assemblyconsiting of:Oil valve body 9Valve poppet 10Damping sleeve 11Lock nut 12Spring 13Anti-extrusion ring 14Washer 15O-ring 16Spacer 17Lock nut 19Support ring (only for 330 bar) 23O-ring 27Connector 44Guide piece 45Cap 46O-ring 47O-ring 48Locking key 88O-ring dimensions [mm]Series Nominal vol. Item 7 Item 16 Item 27 Item 47 Item 48SB330P 1- 6 l 7.5x2 55x3.5 1) 42.2x3 1) 46x3 1) 24.2x3 1)SB550P 1- 5 l 7.5x2 50.17x5.33 1) 37.82x1.78 1) 40.94x2.62 1) 23.52x1.78 1)SB330P/PH 10-32 l/4+6 l 7.5x2 80x5 1) 57.2x3 1) 67.2x3 1) 37.2x3 1)SB330PH 10-32 l 7.5x2 100x5 1) 64.5x3 1) 84.5x3 1) 44.2x3 1)1)For code 663 and 665 different dimensionsSB800PSB1000PDescriptionItemBladder 2Charging screw 6Seal ring U 9.3x13.3x1 7Support ring 8DescriptionItemBladder 2Charging screw 6Seal ring 7E 3.701.12/03.1278

SBO...P...ESBO...P-...A6/347...(PTFE)1212433DescriptionItemCharging screw 1Seal ring 2Seal ring 3DescriptionItemCharging screw 1Seal ring 2Seal ring 3Diaphragm 4SBO...P...A6SBO...P-...A4/777... (PVDF/PTFE)12125433DescriptionItemCharging screw 1Seal ring 2Seal ring 3Diaphragm 4Support ring 5DescriptionItemGas valve complete 1Gas valve insert brass / stainless steel 2Diaphragm 3Please read the Operating Manual!Available on request!E 3.701.12/03.1279

1.4.4 Suction flow stabiliser Spare PartsSB16SDimensionsSB16S - permitted working pressure 16 bar; certified to PED 97/23/ECNominal Fluid Effective Weight A B Ø D H DN*volume[l]volume[l]gasvolume[l] [kg] [mm] [mm] [mm] [mm]12 12 1 40 58025 25 2.5 60 1025425 219 220 6540 40 4 85 890 540 300 250 80100 100 10 140 1150 650 406 350 100400 400 35 380 2050 870 559 400 125Further pressure ranges 25 bar, 40 bar; others on request.Other fluid volumes on request* to EN1092-1/11 /B1/PN16 or PN40DescriptionItemBladder 2Gas valve insert 3O-ring 11Insertion ring, 2x 18Lock nut 21Retaining ring 22Cap nut 25O-ring 27Seal ring 28Lock nut 29E 3.701.12/03.1280

1.4.5 Shock absorberSpare PartsSB16/35A(H)Welding neck flangeWelding neck flangeDimensionsSB16/35A - permitted operating pressure 16/35 bar (PED 97/23/EC)NominalvolumeEffectivegasvolumeWeight[kg]A(approx.)[mm]B(approx.)[mm]C(approx.)[mm][l] [l] SB16A SB35A SB16A SB35A SB16A SB35A SB16A SB35A100 99 84 144 870 880 390 403150 143 101 161 1070 1080 490 503200 187 122 223 1310 1320 685 698300 278 155 288 1710 1720 975 988375 392 191 326 2230 2240 1250 1263450 480 237 386 2625 2635 1465 1478DN*185 198 100DescriptionItemBladder 2Lock nut 3O-ring 11Seal ring 13Vent screw 18O-ring 19Retaining ring 21O-ring 25SB16/35AH - Permitted operating pressure 16/35 bar (PED 97/23/EC)NominalvolumeEffective WeightgasA(approx.)B(approx.)C(approx.)volume [kg][mm][mm][mm][l] [l] SB16AH SB35AH SB16AH SB35AH SB16AH SB35AH SB16AH SB35AHDN*100 99 93 153 957 965 457 465150 143 110 170 1157 1165 557 565200 187 131 230 1417 1425 842 850300 278 164 297 1865 1873 1092 1100375 392 200 335 2307 2315 1342 1350450 480 246 395 2702 2710 1542 1550245 254 80* to EN1092-1/11 /B1/PN16 or PN40others on requestE 3.701.12/03.1281

2.3. TECHNICAL DATA2.3.1 Model code SD(also order example)SeriesType codeno details = for SD330B = bladder accumulator base shell*K = piston accumulator base shell*M = diaphragm accumulator base shell*Nominal volume [l]Material codeDamper0 = without pipe1 = damper for frequencies > 500 Hz2 = narrow band damper - DR3 = broadband damper - DRHousing material1 = carbon steel2 = carbon steel with protective coating*Seal material2 = NBR (acrylonitrile butadiene)6 = FPM (fluoro rubber)Certificate codeU = PED 97/23/ECPermitted operating pressure [bar]Inlet connector / Outlet connectorsee Table 2.3.3SD330 M - 4,2 / 212 U - 330 AD/AD* only on requestE 3.701.12/03.1283

2.3.2 DimensionsSD330SAE flangeSAE flangeNominal volume [l] L [mm] L 1 [mm] Ø D [mm] J ISO 228 Weight [kg]1.3 250 –G 1 6.51141.8 355 155 G 1 1/4 5.54.2 346 –G 1 1/2 12.51684.7 420 155 G 2 11.45.5 815 615 114 G 1 1/4 14.02.3.3 Silencer connectionsa) Threaded connection to ISO 228Nominal volume[l]ABG 3/8D i = 15 mmL E[mm]L A[mm]ACG 1/2D i = 13 mmL E[mm]L A[mm]ADG 3/4D i = 16 mmL E[mm]L A[mm]Fluid connection AAEG 1D i = 19 mmL E[mm]L A[mm]AFG 1 1/4D i = 25 mmL E[mm]L A[mm]AGG 1 1/2D i = 32 mmL E[mm]L A[mm]GGG 1 1/2D i = J1.3 17 17 – – – – – –1.8 – 13 13 13 13 30 30 33 33 – –4.2 – – – – – – without adapter4.7 – – 16 16 16 16 26 26 36 36 36 365.5 – 13 13 13 13 30 30 33 33 – –L E[mm]L A[mm]E 3.701.12/03.1284b) Flange connection SAE J518 (Code 62 - 6000 psi)NominalFGSAE 1/2"D i = 13 mmvolume [l] L E [mm] L A [mm] L E [mm] L A [mm] L E [mm] L A [mm] L E [mm] L A [mm] L E [mm] L A [mm] L E [mm] L A [mm]1.3 – – – – – –1.8 53 31 59 36 65 36 – – –4.2 – – – – 0 33 –4.7 – 105 36 120 36 76 28 76 28 *5.5 53 31 59 36 65 36 – – –- not available* on request3. NOTEThe information in this brochure relates tothe operating conditions andapplications described. For applicationsand operating conditions not described,please contact the relevant technicaldepartment.Subject to technical modifications.FHSAE 3/4"D i = 19 mmFISAE 1"D i = 25 mmFluid connection FFKSAE 1 1/4"D i = 32 mmFLSAE 1 1/2"D i = 38 mmFMSAE 2"D i = 50 mmHYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.com

3. Examples of accumulator stations3.1. Bladder accumulator stationsExample: SS330B-16x32(U)Technical specifications:16 bladder accumulators, each with a volume of 32 lMax. operating pressure: 330 barDimensionsLength[mm]Width[mm]Height[mm]2780 660 1950Example: SS330B-5x50(U)Technical specifications:5 bladder accumulators, each with a volume of 50 lMax. operating pressure: 330 barE 3.653.1/03.12DimensionsLength[mm]Width[mm]Height[mm]1640 600 275086

3.2. Piston accumulator stationsExample: SS350K-1x110/8x50(U)Technical specifications:1 piston accumulator, volume 110 l8 N 2 bottles, each with a volume of 50 lMax. operating pressure: 350 barDimensionsLength[mm]Width[mm]Height[mm]1540 900 3300Example: SS220K-1x120/1x75(U)Technical specifications:1 piston accumulator, volume 120 l1 N 2 bottle, volume 75 lMax. operating pressure: 220 barDimensionsLength[mm]Width[mm]Height[mm]520 800 3500E 3.653.1/03.1287

Example: SS210K-1x110/2x50(U)Technical specifications:1 piston accumulator, volume 110 l2 N 2 bottles, each with a volume of 50 lMax. operating pressure: 210 barDimensionsLength[mm]Width[mm]Height[mm]950 475 2840Example: SS350K-1x200/2x110(A9)Technical specifications:1 piston accumulator, volume 200 l2 N 2 bottles, each with a volume of 110 lMax. operating pressure: 350 barE 3.653.1/03.12DimensionsLength[mm]Width[mm]Height[mm]1250 550 290088

3.3. Nitrogen bottlesNitrogen bottles in modular construction:up to 24 bottles can be assembled in this version on a frame.For a larger number, a special model can be supplied.See catalogue section:• zHydraulic accumulators with back-up nitrogen bottlesNo. 3.553Example: SS350N-16x75(U)Technical specifications:16 N 2 bottles, each with a volume of 75 lMax. operating pressure: 350 barDimensionsLength[mm]Width[mm]Height[mm]2440 900 30004. NOTEThe information in this brochure relates tothe operating conditions and applicationsdescribed.For applications and operating conditionsnot described, please contact the relevanttechnical department.Subject to technical modifications.HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.653.1/03.1289

E 3.653.1/03.1290

Hydraulic Accumulatorswith Back-UpNitrogen Bottles1. GENERALTo complete the accumulator range,HYDAC provides a variety of usefulaccessory products. They guaranteecorrect installation and optimumfunctioning of HYDAC hydraulicaccumulators. These include, amongstothers, nitrogen bottles which can beused to back up bladder and pistonaccumulators. Nitrogen bottles used asback-ups increase the gas volume in theaccumulator. This means that smalleraccumulators can be used for the samegas volume and costs can be reduced.To assist selection the Simulation ProgramASP can be downloaded fromwww.hydac.com.2. BACK-UP VERSIONS2.1. CONSTRUCTIONBased on bladder accumulator models 20 ... 50 l, the gas-side of these transferaccumulators is designed specially for connecting to nitrogen bottles. A diffuser rodprevents damage to the bladder when the accumulator is charged. This constructioncan also be used for the separation of fluids (taking into account the volume ratios whichapply to bladder accumulators).Type 1Adapter FPSPipingFor further information, please turn to thesections:• zBladder Accumulators StandardNo. 3.201• zPiston AccumulatorsNo. 3.301HydraulicaccumulatorNitrogen bottleOil valveAdapterType 2E 3.553.1/03.1291

2.2. DIMENSIONSType 12.3. SPARE PARTSDescriptionItemRepair kitconsisting of:Bladder 2Retaining nut 4O-ring 7.5x2.0 1) 7Washer 15O-ring 80x5 1) 16Seal ring 20Support ring 23O-ring 48x3 1) 27O-ring 22x2.5 1) 31O-ring 11x2 1) 33Diffuser rod 30Anti-extrusion ring 14Recommended spare parts1)For code 663 and 665different dimensionsItem 1 not available as a spare part.Item 25 must be ordered separately,See Bladder Accumulators Standard,No. 3.201 (see Point 4.2.).Item 32 Type 1 is standard.For other spare parts, see Point 3.2.4. Repair kitsNBR, carbon steelNom. volumes: 20 ... 52 litresStandard gas valveNominal volume [l]Part no.20 0311950024 0311950232 0311949852 03119499Type 2E 3.553.1/03.12Nominal volume[l]Effect. gas volume[l]Weight[kg]A max.[mm]20 17.5 53.5 90524 24 72 107032 32.5 89 142050 47.5 119.5 193092

3. NITROGEN BOTTLES3.1. DESCRIPTION ANDCONSTRUCTIONNitrogen bottleMinimess connectionHYDAC nitrogen bottles are used to takein and store nitrogen. HYDAC offers awide selection of bottle types, such asforged vessels and bladder shells or pistoncylinders.3.2. ADVANTAGESUsing HYDAC nitrogen bottles providesthe following benefits:• zCost-effective increase of theaccumulator volume and as a result• zsmaller accumulators for the same gasvolume.3.3. Technical Data3.3.1 Model code(also order example)SN360SeriesCode letterNo details = standardB = bladder accumulator shell 1)K = piston accumulator cylinder 2)M = diaphragm accumulator half-sections 3)Nominal volume [l]Connection typeConnection type on connection side*A = ISO 228 (BSP)B = DIN 13 to ISO 965/1 (metric)C = ANSI B1.1 (UNF seal SAE)D = ANSI B2.1F = flangeDrain side (condensate)*A = ISO 228 (BSP)B = DIN 13 to ISO 965/1 (metric)C = ANSI B1.1 (UNF seal SAE)D = ANSI B2.1F = flange1 = sealed with blanking plug2 = with condensate drain, hex. socket cap screw3 = with condensate drain valve4 = with Minimess valveMaterial codeMaterial (of connection)0 = no components1 = carbon steel3 = stainless steel4 = carbon steel with protective coating6 = low temperature steelHousing material1 = carbon steel2 = carbon steel with protective coating4 = stainless steel6 = low temperature steelSeal material (elastomer)0 = no elastomer used2 = NBR (Perbunan)4 = IIR (Butyl)5 = TT-NBR6 = FKM (fluoro rubber)Certificate codeU = PED 97/23/EC 4)Permitted operating pressure [bar]Size for connection side (see Table 3.3.2)Size for drain side (see Table 3.3.2)0 = for type 1-41)see catalogue section: Bladder Accumulators Standard, No. 3.2012)see catalogue section: Piston Accumulators, No. 3.3013)see catalogue section: Diaphragm Accumulators, No. 3.1004)see catalogue section: Accumulators, No. 3.000, Point 3.3.3.2 Connections*Type ABSPISO228SizeBmetricDIN 13ISO 965/1CSAEANSI B1.1- 50 AA / 010 U - 360 D DDNPTANSI B2.1FFlangeconnectionA G 1/4" M12x1.5 7/16"-20UNF 1/4"1/2"3000 PSICode 61B G 3/8" M18x1.5 9/16"-18UNF 3/8" 3/4"C G 1/2" M22x1.5 3/4"-16 UNF 1/2" 1"D G 3/4" M27x2 1 1/16"-12UN 3/4" 1 1/4"E G 1" M33x2 1 5/16"-12UN 1" 1 1/2"F G 1 1/4" M42x2 1 5/8"-12UN 1 1/4" 2"G G 1 1/2" M48x2 1 7/8"-12UN 1 1/2"1/2"6000 PSICode 62H G 2" M14x1.5 2 1/2"-12UN 2" 3/4"I G 1 3/4" M8K M16x1.5 1 1/4"L 7/8"-14 UNF 5/8" 1 1/2"M 2"SSpecial model* not all combinations are possible, others on requestE 3.553.1/03.1293

4.1.4 Technical specifications / DimensionsCharging and testing block DN 16charging and testing unitM28x1.54 mountingboreshydraulicaccumulatornitrogen bottleconnection for pressuregauge (optional)gas safety valveGSV6 (optional)connection for pressuregauge (optional)Charging and testing block DN 32charging and testing unitM28x1.54 mountingboreshydraulicaccumulatornitrogen bottleconnection for pressuregauge (optional)gas safety valveGSV6 (optional)connection for pressuregauge (optional)E 3.553.1/03.1295

4.2. Condensate drain setThe condensate drain set consists of a throttle valve and a suitable condensatedraining hose.It is used to drain any condensate from the nitrogen bottle, in a controlled way.4.3. NITROGENCHARGING UNITNitrogen bottleThrottle valveDraining hoseHYDAC nitrogen charging units facilitatefast and cost-effective charging or testingof the required pre-charge pressuresin bladder, diaphragm and pistonaccumulators. They guarantee optimumuse of standard nitrogen bottles up toa residual pressure of 20 bar and amaximum accumulator charging pressureof 350 bar. Portable, mobile and stationarytypes of N 2-Server are available.For further information and technicalspecifications, see catalogue section:• zNitrogen charging units N 2-ServerNo. 2.201Description Length [m] Part no.0.4 3472820Condensate drain set 1.0 34728231.6 34728245. NOTEThe information in this brochure relates tothe operating conditions and applicationsdescribed. For applications and operatingconditions not described, please contactthe relevant technical department.Subject to technical modifications.E 3.553.1/03.1296HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.com

Universal Chargingand Testing Unit FPU-1for Bladder, Piston and DiaphragmAccumulators1. Description1.1. FunctionThe HYDAC charging and testing unitFPU-1 is used to charge accumulators withnitrogen or to check or to change theexisting pre-charge pressure inaccumulators.For this purpose the charging and testingunit is screwed onto the gas valve of thehydraulic accumulator and connected via ahose to a commercial nitrogen bottle.If the nitrogen pressure is only to bechecked or reduced, the charging hosedoes not need to be connected. The unithas a screw-type fitting with a built-ingauge, check valve and a spindle foropening the accumulator gas valve tocontrol the pressure.HYDAC piston and diaphragmaccumulators can be charged and checkedwithout the need for adapters. Bladderaccumulators, however, require an A3adapter.Please read the Operating Manual!No. 3.501.CE1.2. DesignThe HYDAC charging and testing unitfor bladder, piston and diaphragmaccumulators consists of:• zValve body• zSpindle• zCheck valve• zRelease valve• zPressure gauge• zCharging hose• zA3 adapter for bladder accumulatorsRelease valveSpindleCheck valvePressure gauge1.3. Special modelsFor higher pressures, the following specialmodels are available:• zFPS 600for bladder accumulators up to 600 barmax. pre-charge pressure (see technicalinformation 293715).• zFPK 600for piston, diaphragm andSB800-1.5 accumulators up to 600 barmax. pre-charge pressure (seetechnical information 297248).• zFPH 800for high pressure bladder accumulatorsup to 800 bar max. pre-charge pressure(see technical information 242948).The photo top left shows a possible orderoption, including accessories.E 3.501.26/03.1297

1.4. Testing intervalsIn general, nitrogen losses on HYDAC hydraulic accumulators arevery low. However, a regular check of the gas filling pressure isrecommended to prevent the piston from hitting the end cap, orthe bladder or diaphragm from becoming too deformed if there isa drop in the pressure p 0.The pre-charge pressure p 0as shown on the label or theaccumulator body, must be re-set after every new installation orrepair and then checked at least once during the following week. Ifno nitrogen loss is detected, a further check should be made afterapprox. 4 months. If after this period no change in the pressure isfound, a yearly check should be sufficient.1.5. Schematic drawingAdaptor G Pressure reducer Charging and testing unit FPU-1Nitrogen bottleG1CharginghoseAdapter AN 2N 2HydraulicaccumulatorFluid connectionM2. Technical Specifications2.1. Model code(also order example)FPU-1 - 250 F 2,5 G2 A1 KUniversal chargingand testing unitp max= 350 barGauge indication range0 - 10 bar 0 - 145 psi 100 - 25 bar 0 - 363 psi 250 - 100 bar 0 - 1450 psi 1000 - 250 bar 0 - 3625 psi 2500 - 400 bar 0 - 5800 psi 400Charging hoseF= for 200 bar nitrogen bottlewith connection W24.32x1/14(DIN 477, Part 1)FM = for 300 bar nitrogen bottlewith connection M30x1.5(DIN 477, Part 5 up to April 2002)FW = for 300 bar nitrogen bottlewith connection W30x2(DIN 477, Part 5 from April 2002)Length of charging hose2.5 = 2.5 m4.0 = 4 mSpecial lengths on requestAdapter G for nitrogen bottlesSee table, Point 3.6.Adapter AA1 = M16x1.5A2 = 5/8 - 18 UNFA3 = 7/8 - 14 UNFA4 = 7/8 - 14 UNFA5 = M8x1(A3 is supplied as standard)A6 = G 3/4 AA7 = G 1/4A8 = G 3/4A9 = Vg 8A10 = 7/8 - 14 UNFA11 = M16x2A12 = M16x2D4 = 5/8 - 18 UNF(Part no. 366374)other adapters on requestProtective caseAccessories - please give full details when ordering(see Point 4.)E 3.501.26/03.1298

3. Dimensions3.1. Charging and testing unit FPU-1 with adapter for HYDAC accumulatorsD4 AdapterBladder accumulators330-0.5 / 400-0.5Bladder accumulators≥ 1lGas valveto ISO 10945Piston and diaphragmaccumulatorsE 3.501.26/03.1299

3.2. Charging hose f(200 bar nitrogen bottle - connection to DIN 477, Part 1)LengthPart no.2.5 m 2365144.0 m 23651510.0 m 37340515.0 m 211555220.0 m 210976528.0 m 2109574Charging hoses are suitable forthe particular maximum permittedoperating pressure marked on them and10,000 charging processes.(HYDAC charging hoses comply withthe EC Machinery Directive and withDIN EN 982 and DIN EN 853 to 857)3.3. Charging hose fM(300 bar nitrogen bottle - connection to DIN 477, Part 5 up to April 2002)LengthPart no.2.5 m 30194174.0 m 30194183.4. Charging hose fW(300 bar nitrogen bottle - connection to DIN 477, Part 5 after April 2002)LengthPart no.2.5 m 30194194.0 m 3019420E 3.501.26/03.12knurl100

3.3. Adapters A1 to A12The universality of the FPU-1 isguaranteed because as well as HYDACpiston and diaphragm accumulators,bladder accumulators can also be chargedand tested using the A3 adapter.By using additional adapters other makesof accumulator can also be charged andtested.A1 (Part no. 361619)A5 (Part no. 291531)A9 (Part no. 2128638)A2 (Part no. 361605)A6 (Part no. 2108819)A10 (Part no. 2128849)A3 (Part no. 291533)A7 (Part no. 2110629)A11 (Part no. 3018210)A4 (Part no. 291536)A8 (Part no. 2124524)A12 (Part no. 3203185)E 3.501.26/03.12101

3.4. AdaptersG2 to G12G 2 (Part no. 236376)G 6 (Part no. 2103423)G 10 (Part no. 2103427)G 3 (Part no. 2103421)G 7 (Part no. 236377)G 11 (Part no. 3018678)G 4 (Part no. 236374)G 8 (Part no. 2103425)G 12 (Part no. 3195556)G 5 (Part no. 236373)G 9 (Part no. 241168)E 3.501.26/03.12102

3.4.1 Schedule of countriesG adapters for nitrogen bottles from different countries.CountryType / Part no.G1 1) G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12236376 2103421 236374 236373 2103423 236377 2103425 241168 2103427 3018678 3195556AlbaniaAlgeriaArgentinaAustraliaAustriaBahamasBahrainBangladeshBarbadosBelgiumBoliviaBotswanaBrazilBulgariaBurmaCanadaChileChinaColumbiaCosta RicaCyprusCzech RepublicDenmarkDjiboutiDominican RepublicEcuadorEgyptEthiopiaFijiFinlandFranceGabonGambiaGermanyGhanaGreat BritainGreeceGuatemalaGuineaGuyanaHondurasHong KongHungaryIndiaIndonesiaIranIraqIrelandIsraelItalyIvory CoastJamaicaJapanJordanKenyaKoreaKuwaitLebanonLibyaMalawiMalaysiaMaltaMauritiusMexicoMoroccoMozambiqueNetherlandsNew ZealandNigeriaNorwayOmanPakistanParaguayPeruPhilippinesPolandPortugalPuerto RicoQatarRomaniaRussiaSaudi ArabiaSingaporeSouth AfricaSpain Sri LankaSudanSurinamSwazilandSwedenSwitzerlandSyriaTaiwanTanzaniaThailandTrinidad/TobagoTunisiaTurkeyUnited Arab EmiratesUruguayUSAVenezuelaVietnamYugoslavia 2)Zambia = suggestion1)= already fitted to hose2)= Bosnia, Herzegovina, Croatia, Macedonia, SloveniaE 3.501.26/03.12103

4. Accessories4.1. Protective caseFor storing the charging and testing unitand adapters.Different types of case are available,depending on customer requirement.FPU-1, standard model,without case: approx. 1.4 kgFPU-1, standard model,with case: approx. 3.0 kg4.2. Gas safety valveProvides protection by reducing thepressure in a controlled way if pressureexceeds the permitted level unexpectedly,see catalogue section:• zSafety Equipment forHydraulic AccumulatorsNo. 3.5524.3. Adapter D4For screw connector D on bladderaccumulators < 1 l (see Point 3.)4.4. Intermediate piece GSV6-10-CEIntermediate piece for installing the gas safety valve GSV6 between the 200 bar nitrogenbottle and the charging and testing unit FPU-1.Weight: 0.5 kgItem Quantity Description Dimension Part no.Intermediate piece GSV6-10-CE 24255812 2 O-ring 20x2.5x2 60105813 1 Seal ring 20x11.5x2 61470614 1 Seal ring 14x8.5x2 612735Seal kit for intermediate piece 21172874.5. Pressure reducerFor adjusting the required pre-charge pressure between the nitrogen bottle and theaccumulator.4.5.1 Pressure reducer for 200 bar nitrogen bottlesInlet: connection W24.32x1/12-DIN 477, Part 1Outlet: male thread W24.32x1/14-DIN 477, Part 1Bottle pressure [bar] Pressure after reducer [bar] Part no.200 20 635409200 100 635411200 200 6354124.5.2 Pressure reducer for 300 bar nitrogen bottlesInlet: connection W30x2-DIN 477, Part 5Outlet: male thread W24, 32x1/14-DIN 477, Part 5Bottle pressure [bar] Pressure after reducer [bar] Part no.300 20 6004020300 100 6004021300 200 6004022300 270* 6004023* if pressure after reducer > 200 bar, the outlet has a male thread W30x2-DIN 477, Part 5E 3.501.26/03.12104

5. Spare parts, adapters and tools5.1. Spare partsCHARGING AND TESTING UNIT FPU-1Item Quantity Description Part no.1 1 O-ring 6x1 6010322 1 Seal ring 6127303 1 Pressure gauge 0 - 10 bar0 - 25 bar0 - 100 bar0 - 250 bar0 - 400 bar6351396351406351416351426351435 1 O-ring 15x2 6010496 1 Seal ring 6014567 1 O-ring 11x2 6010438 1 O-ring 9x2 6010409 1 O-ring 11x2.5 60368110 1 O-ring 5.7x1.9 6004009Seal kit FPU-1 21176696. NoteThe information in this brochure relates tothe operating conditions andapplications described.For applications and operating conditionsnot described, please contact the relevanttechnical department.Subject to technical modifications.5.2. AdaptersDescriptionPart no.Seal kit for adapters A1-12 32691535.3. ToolsDescriptionPart no.Wrench 14x15 1011065Allen key SW6 1005164Torque wrench 3136470Valve tool for gas valve 616886HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.501.26/03.12105

E 3.501.26/03.12106

Safety and Shut-off BlockSAF/DSV1. Description1.1. GENERALThe HYDAC safety and shut-off block isused to shut off and discharge hydraulicaccumulators or consumers.It complies with the relevant safetystandards in accordance withDIN EN 982 and the German industrialsafety regulations BetrSichV.The Hydac pressure relief valve DB12 isused on the SAF series. This is a directoperatedpressure relief valve in poppetvalve construction with excellent openingand closing characteristics. This version ofthe DB12 complies with the requirementsof the Pressure Equipment Directive97/23/EC with CE marking and is suppliedwith a declaration of conformity and anoperating manual.Please read the Operating Manual!No. 5.169.B1.1.1 Key to the circuit diagram 1.1.2 Product benefitsThe compact combination of componentsCircuit diagramconsiderably simplifies the connectionof an accumulator or consumer to thehydraulic system and provides thefollowing benefits:• zMinimum of space, maintenance andinstallation required. As all the individualunits are combined in one block,considerably fewer pipe fittings arenecessary for installation.• zConsiderable reduction in installationtime.• zAll types of connections for variousaccumulator designs and makesare available - imperial and metricconnections as well as manifoldmounted and weld nipple.• zAdditional valves such as pilot-operatedcheck valves, flow control valves andcombined flow control and check valvescan be fitted to the system connection P. Safety valve to prevent overpressure toPED 97/23/EC Pressure gauge Shut-off valve Pressure release valve Connection for test gaugeThese devices are combined in acompact, space-saving HYDAC safetyand shut-off block. The following devicesare also available: Solenoid-operated pressure releasevalve ThrottleDB12-CE p-Q graph, see abovep [bar]Q [l/min]This valve cannot be set to values in the shaded areaE 3.551.19/03.12107

1.2. CONSTRUCTIONThe SAF safety and shut-off block consistsof a valve block, an integral HYDACpressure relief valve, a main shut-offvalve and a manually operated pressurerelease valve, and the necessary gaugeconnections are provided in addition to thetank connection.In addition, an optional solenoid-operated2-way directional valve allows automaticdischarge of the accumulator or consumerand therefore of the hydraulic system in anemergency or for shut-down.1.3. PORTSThe safety and shut-off block has thefollowing ports:S – Accumulator portP – Inline port (pump)T – Tank portM1 – Test gauge portG 1/2-ISO 228(G 1/4 at SAF 10)M2 – Gauge connectionG 1/4-ISO 2281.4. SPECIFICATIONS1.4.1 Operating fluidsMineral oil to DIN 51524Part 1 and part 2(other fluids on request)Viscosity range:Min. 10 mm²/sMax. 380 mm²/sFiltrationMax. permitted contamination level of theoperating fluid to SAE AS 4059 Class 11.We therefore recommend a filter with aminimum retention rate of ß 20≥ 100. Thefitting of filters and regular replacementof filter elements guarantees correctoperation, reduces wear and tear andextends the service life.1.4.2 Permitted operating temperature-10 °C ... +80 °C(ambient temperature on E version limitedto -10 °C ... +60 °C)1.4.3 Max. operating pressure400 bar1.4.4 Model with solenoid-operatedpressure reliefTypeSolenoid-operated by means of pressuretight,oil-immersed, single-strokesolenoids in accordance with VDE 0580.Actuating solenoid with male connector toDIN 43650, standard for general industrialapplications, available for 24 V DCand 230 V AC.Type of currentDC solenoidWhen connected to AC voltage, thenecessary DC voltage is produced bymeans of a bridge rectifier connector.VOLTAGE TOLERANCE:±15% of nominal voltageNominal currentDependent on the nominal voltage24 V DC 0.80 A230 V AC 0.11 APower consumption:p 20= 18 WDUTY: ContinuousSwitching timeDepending on symbol, pressure across theindividual ports and flow rate:WSM06020Y:on: 50 ms, off: 35 msWSM06020Z:on: 35 ms, off: 50 ms.1.5. STANDARD TYPES1.5.1 Model with manually operatedpressure release valveThe basic model Safety and Shut-off Blockhas a manually operated pressure releasevalve, code "M", and a direct-actingpressure relief valve.Sizes: SAF10MSAF20MSAF32M1.5.2 Model with solenoid-operatedpressure reliefThe E version of the safety and shut-offblock has a solenoid-operated 2-waydirectional valve for automatic pressurerelease of the accumulator and thehydraulic system in an emergency or forshut-down.Sizes: SAF10ESAF20ESAF32EE 3.551.19/03.12108

1.6. ∆p-Q GRAPHS FOR SAFmeasured atν = 32 mm²/st oil= 40 °COperating pressure = 400 barwith DB12 pressure relief valve1.6.1 Flow from the pump to theaccumulator1.6.2 Flow from the accumulator viathe solenoid-operated releasevalve to the tank1.6.3 Flow from the accumulator viarelease valve to the tankSAF10M/ESAF10ESAF10M/EE 3.551.19/03.12∆p [bar]∆p [bar]∆p [bar]Flow rate [l/min]Flow rate [l/min]Flow rate [l/min]SAF20M/ESAF20ESAF20M/E∆p [bar]∆p [bar]∆p [bar]Flow rate [l/min]Flow rate [l/min]Flow rate [l/min]SAF32M/ESAF32ESAF32M/E∆p [bar]∆p [bar]∆p [bar]Flow rate [l/min]Flow rate [l/min]Flow rate [l/min]109

2. MODEL CODE FOR SAF(also order example)SAF 20 E 1 2 Y 1 T 210 A – S 13 – LPISafety and shut off blockSeries SAFSize of main shut-off valve10 = DN1020 = DN2032 = DN3232-3 = DN32 with 3 pressure relief valves NG1250 = DN50Type of dischargeM = manual dischargeE = solenoid-operated and manual dischargeBlock material1 = carbon steelother materials 1)Material of seals (elastomer)2 = NBR (Perbunan)5 = EPDM6 = FKM (Viton ® )7 = othersType of directional poppet valveY = open when de-energised (2/2 directional valve WSM06020Y)Z = closed when de-energised (2/2 directional valve WSM06020Z, only up to 350 bar)Type of voltage - directional poppet valve1 = 24 V DC2 = 115 V AC3 = 230 V AC6 = 120 V AC7 = othersPressure relief valveT... = pressure-set and lead-sealed by TÜVN... = pressure-set without TÜV 1)Pressure settinge.g. 210 barThreaded connection toA = ISO 228 (BSP)B = DIN 13, to ISO 965/1 (metric) 1)C = ANSI B1.1 (UNF, O-ring seal to SAE) 1)Adapterto accumulator (see Point 7.)e.g. S13 = ISO 228 - G 2AAdditional equipment (see Point 5.4)L = lockable main shut-off valve (for use with padlock)LPI = model L with additional position monitoring (inductive proximity switch)LPM = model L with additional position monitoring (mechanical limit switch with roller lever)LS = lockable release valveE 3.551.19/03.12Accessories(Please give full details when ordering: see Point 7. Accessories)1)On request110

3. DIMENSIONS3.1. SAF10 Safety and shut-off block size 10S adapter see Accessoriespressure release valve2/2 directional valve(only on SAF 10E)coil can be turnedthrough 360°system connectionShut-off valveM33x2ISO 6149/DIN 3852 Part 3direct acting pressure relief valve size 12TypeSAF10M...SAF10E...Weight4.2 kg4.6 kgSAF10 Preferred modelsType Part no. Type Part no.SAF10M12T400A 2121582 SAF10E12Y1T400A 2125858SAF10M12T350A 2122208 SAF10E12Y1T350A 2122210SAF10M12T330A 2121236 SAF10E12Y1T330A 2122211SAF10M12T315A 2121121 SAF10E12Y1T315A 2122212SAF10M12T300A 2121354 SAF10E12Y1T300A 2122213SAF10M12T250A 2121353 SAF10E12Y1T250A 2122214SAF10M12T210A 2121346 SAF10E12Y1T210A 2121662SAF10M12T200A 2121351 SAF10E12Y1T200A 2122215SAF10M12T150A 2121345 SAF10E12Y1T150A 2122216SAF10M12T100A 2121344 SAF10E12Y1T100A 2122041SAF10M12T070A 2121350 SAF10E12Y1T070A 2122217SAF10M12T050A 2122207 SAF10E12Y1T050A 2122218SAF10M12T035A 2121349 SAF10E12Y1T035A 2122219E 3.551.19/03.12111

3.2. SAF20 Safety and shut-off block size 20S adaptersee Accessories2/2 directional valve(only on SAF 20E)coil can be turnedthrough 360°pressure releasevalvesystem connectionShut-off valveM33x2ISO 6149/DIN 3852 Part 3direct acting pressure relief valve size 12TypeSAF20M...SAF20E...Weight6.8 kg7.2 kgE 3.551.19/03.12SAF20 Preferred modelsType Part no. Type Part no.SAF20M12T400A 2120317 SAF20E12Y1T400A 2121022SAF20M12T350A 2120434 SAF20E12Y1T350A 2121979SAF20M12T330A 2120323 SAF20E12Y1T330A 2120394SAF20M12T315A 2120324 SAF20E12Y1T315A 2120833SAF20M12T300A 2120332 SAF20E12Y1T300A 2120836SAF20M12T250A 2120432 SAF20E12Y1T250A 2120851SAF20M12T210A 2120319 SAF20E12Y1T210A 2120320SAF20M12T200A 2120325 SAF20E12Y1T200A 2120835SAF20M12T150A 2120330 SAF20E12Y1T150A 2120832SAF20M12T100A 2120401 SAF20E12Y1T100A 2120369SAF20M12T070A 2120326 SAF20E12Y1T070A 2120849SAF20M12T050A 2122172 SAF20E12Y1T050A 2121000SAF20M12T035A 2120281 SAF20E12Y1T035A 2122220112

3.3. SAF32 Safety and shut-off block size 32S adaptersee Accessorieshex. socket cap screw M16x45torque 130 Nmsupplied as part of S adaptersystem connectionShut-off valve2/2directional valve(only on SAF 32E)coil can be turnedthrough 360°pressure release valvedirect acting pressure relief valve size 12TypeSAF32M...SAF32E...Weight12.0 kg12.4 kgSAF32 Preferred modelsType Part no. Type Part no.SAF32M12T400A 2125856 SAF32E12Y1T400A 2123123SAF32M12T350A 2122230 SAF32E12Y1T350A 2122221SAF32M12T330A 2122231 SAF32E12Y1T330A 2120371SAF32M12T315A 2121136 SAF32E12Y1T315A 2122222SAF32M12T300A 2120837 SAF32E12Y1T300A 2120834SAF32M12T250A 2122233 SAF32E12Y1T250A 2122223SAF32M12T210A 2120321 SAF32E12Y1T210A 2120318SAF32M12T200A 2121135 SAF32E12Y1T200A 2122224SAF32M12T150A 2121134 SAF32E12Y1T150A 2122225SAF32M12T100A 2121129 SAF32E12Y1T100A 2122226SAF32M12T070A 2122234 SAF32E12Y1T070A 2122227SAF32M12T050A 2121137 SAF32E12Y1T050A 2122228SAF32M12T035A 2121125 SAF32E12Y1T035A 2122229E 3.551.19/03.12113

4. SPARE PARTSE 3.551.19/03.12SAF BlockSAF10MSAF10ESAF20MSAF20EDescription Item DimensionsRepair kitPart no.2122238 (NBR)2122240 (FPM)Part no.2122242 (NBR)2122244 (FPM)SAF32MSAF32EPart no.2122246 (NBR)2122248 (FPM)consisting of:Spindle 1Disc 2O-ring 3 10x2 15x2.5 20x3Ball 4Switching handle 5Spindle 6O-ring 7 6x2Set screw 8 M4x6 M4x10Slip-in orifice 9 Ø1.5 mm (Q max - 25.5 l/min)O-ring 11 17x2Back-up ring 12 11.7x15x1O-ring 13 11x2Sealing cup 14O-ring 15 21x2 34x2.5 56.7x2.8O-ring 16 23.47x2.62Back-up ring 17 18.3x21.5x1O-ring 18 18x2O-ring 19 29.7x2.8 29.7x2.8 37.2x3Blanking plug 202122232/2 directional valve assembly(only for E-version)Blanking plug assembly(converts "E" version to "M" version)Seal kitconsists of: Items 3, 7, 8, 11, 12, 13,14, 15, 16, 17, 18, 19, 20, 21, 22, 23Spindle repair kitconsists of: Items 6, 7, 8G 1/8G 1/4––G 1/8G 1/4G 3/8G 1/210 Part no.3156869 (WSM 06020Y - open when de-energised)3156873 (WSM 06020Z - closed when de-energised)277645Part no.2121699 (NBR)2121701 (FPM)Part no.2115648 (NBR)2115649 (FPM)Part no.2121703 (NBR)2121705 (FPM)G 1/8G 1/4G 3/8G 1/2Part no.2121707 (NBR)2121709 (FPM)114

5. SPECIAL MODELS5.1. TYPE SAF32-3M(E)With 3 direct acting pressure relief valves size 12(max. operating pressure 400 bar)Adaptersee Accessorieshex. socket cap screw M16x45torque 130 Nmsupplied as part of S adapterpressure release valvesystem connection2/2directional valve(only on SAF32-3E)coil can be turnedthrough 360°SAF32-3MSAF32-3Edirect actingpressure relief valve size 12TypeSAF32-3M...SAF32-3E...Weight24 kg25 kgE 3.551.19/03.12115

5.2. Type SAF50M(E)for large flowswith 3 direct acting pressure relief valves size 12(max. operating pressure 400 bar)S adapteron requesthex. socket cap screw M16x45torque 130 Nmsupplied as part of S adapter2/2 directional valveonly on SAF50Ecoil can be turnedthrough 360°system connectionpressure releasevalveSAF50MSAF50Edirect actingpressure relief valve size 12E 3.551.19/03.12TypeSAF50M...SAF50E...Weight25 kg26 kg116

5.3. TYPE SA32M(E)29with pilot-operated pressure relief valve (Q max= 600 l/min)(max. operating pressure 330 bar)for pressurised tank linesa valve "TVY" with externaloil return must be usedS adaptersee Accessorieshex. socket cap screw M16x45supplied as part of S adaptersystem connectionShut-off valveE 3.551.19/03.12117

pressure release valve2/2 directional valve(only on SA31E29)coil can be turnedthrough 360°pilot-operatedpressure relief valve size 32Pilot-operated pressure relief valveseize 32Lowest setting pressure [bar]inlet pressure [bar]min. setting pressure,circulating pressure[bar]Flow rate [l/min]Flow rate [l/min]SA32E29TVYSA32E29TVSA32M29TVYThe safety and shut-off block SA32M(E)29is equipped with a pilot-operated pressurerelief valve size 32 for high flow rates up to600 l/min.The E version of the safety and shut-offblock has a solenoid-operated 2-waydirectional valve for automatic pressurerelease of the accumulator and thehydraulic system in an emergency or forshut-down.For unpressurized tank lines, valve type"TV" must be used(with internal oil return to tank).For pressurised tank lines, valve type"TVY" is recommended(with external oil return to tank).Two different models of the 2-waydirectional valve are available:– WSM06020Y (open when de-energised)– WSM06020Z (closed whende-energised)SA32M29TVE 3.551.19/03.12TypeSA32M29...SA32E29...Weight22.5 kg23.5 kg118

5.4. SAFETY AND SHUT-OFF BLOCK WITH ADDITIONAL EQUIPMENTSafety and shut-off blocks are available with a device to enable the shut-off valve to be locked in the openor closed position using a padlock.It is also possible to fit inductive proximity switches or roller-actuated limit switches to control the openand closed position of the shut-off valve.Supplementary equipment LSupplementary equipment LPIinductive proximity switchto monitor the open or closedposition of the shut-off valveclosedopenoptional locking deviceto enable the shut-off valve tobe locked in the open or closedposition using a padlockclosedoptional locking deviceto enable the shut-off valve tobe locked in the open or closedposition using a padlockopenswitching distance 2 mmSupplementary equipment LPMSupplementary equipment LSmechanical limit switchwith roller lever to monitor the openor closed position of the shut-offvalveoptional locking devicefor pressure releasevalveclosedclosedopenoptional locking deviceto enable the shut-off valve tobe locked in the open or closedposition using a padlockopenE 3.551.19/03.12119

5.5. SAFETY AND SHUT-OFFBLOCK FOR FRONTPANEL MOUNTINGThe safety and shut-off block consists of avalve block, a built-in pressure relief valve,a main shut-off valve and a manuallyoperated pressure release valve.This block is mounted on a front panel with3 M8 screws. Ports "P" and "T" are locatedon the mounting side.Advantages:The compact design means that the blockoccupies a minimum of space and ensuresminimum maintenance.Specifications:Type:SA6M10T...Size:DN10Max. operating pressure: 350 barDirect actingpressure relief valve: NG65.6. SAFETY AND SHUT-OFFBLOCK WITH 2-WAYCARTRIDGE VALVE(LOGIC ELEMENT)This safety and shut-off block consists ofa valve block, an integral pressure reliefvalve and a solenoid-operated 2-waycartridge valve which replaces the mainshut-off valve.Advantages:In addition to its compact construction,this model is capable of rapid switching tocontrol the oil flow.5.6.1 Function when using 4/2directional valveWhen the 4/2 directional valve is in theswitching position shown (open whende-energised), the spring chamber ofthe logic element is pressurised via theaccumulator pressure; the path from P to Sis blocked and the hydraulic accumulator isautomatically shut off from the system. Byconnecting the accumulator via the slip-inorifice in the pilot valve to the tank, it willslowly discharge.When the 4/2 directional poppet valve isin the discharge position (energised) thespring chamber of the logic element isdischarged, the path from P to S is openand the accumulator is charged.Technical specifications:Type Size Max.operatingpressurePressurerelief valve 1)SA20A50T... DN20 400 bar NG12 (2)SA32A50T... DN30 400 bar NG12 (3)SA40A50T... DN40 400 bar NG12 (3)1)number of pressure relief valves5.6.2 Function when using 3/2directional poppet valveWhen the 3/2 directional poppet valveis in the switching position shown (openwhen de-energised), the spring chamberof the logic element is pressurised via thesystem pressure; the path from P to S isblocked and the accumulator is shut offfrom the system. When the 3/2 directionalpoppet valve is in the discharge position(energised) the spring chamber of the logicelement is discharged, the path from P toS is open and the accumulator is charged.If the pump breaks down or if it is switchedoff, the 3/2 directional poppet valve revertsto the "open when de-energised" position;the accumulator pressure shuts off thelogic element via the shuttle change-overvalve and shuts off the accumulator fromthe system.Technical specifications:Type Size Max.operatingpressurePressurerelief valve 1)SA20A51T... DN20 400 bar NG12 (2)SA32A51T... DN30 400 bar NG12 (3)SA40A51T... DN40 400 bar NG12 (3)1)number of pressure relief valvesE 3.551.19/03.12120

6. DESCRIPTION OF DSV106.1. GENERALDSV10 as a"Low Cost Alternative"to SAF10The three-way safety block DSV10 isused to isolate and discharge hydraulicpressure accumulators and consumers. Itcomplies with the relevant safety standardsin accordance with DIN EN 982 and theGerman industrial safety regulationsBetrSichV.The HYDAC pressure relief valve DB12 isused with the DSV series.This is a directoperatedpressure relief valve in poppetvalve construction with excellent openingand closing characteristics.This version of the DB12 complies with therequirements of the Pressure EquipmentDirective 97/23/EC with CE marking. Thereare four different models:• zDSV10MManual discharge,Standard L-ball• zDSV10M-T-ballManual discharge,T-ball• zDSV10EYManual/solenoid-operated discharge,open when de-energised• zDSV10EZManual/solenoid-operated discharge,closed when de-energisedThe essential difference compared to theSAF10 lies in the shut-off and dischargefunction of the DSV10. On request we cansupply other models to cover almost allapplications, e.g. for aggressive media.On request we can supply test certificatesto EN10204 and quality test certificates toDIN 55350, Part 18.6.2. CONSTRUCTIONThe DSV three-way safety block consistsof a valve block with an integratedpressure relief valve and the shut-off valve.It has ports for the pump, pressure gauge,tank and accumulator.In addition, an optional solenoid-operated2-way directional valve allows automaticdischarge of the accumulator or consumer.Accumulator operationsystempressureoptionalsystempressureoptionalShutting off the system pressureand simultaneously discharging of theaccumulator6.3. PORTSThe DSV has the following ports:S – Accumulator port(M33x2 DIN 3852 part 3)P – Inline port(G 3/8 and G 1/2)T – Tank port(G 1/4)M – Pressure gauge port(G 1/4)6.4. FUNCTIONWhen the accumulator is in operation thechange-over ball valve connects the pumpport with the accumulator. At the same timethe accumulator is monitored for pressurevia the built-in pressure relief valve.By switching over the ball valve, the pumpport is shut off leakage-free on the inletside and the accumulator is dischargedsimultaneously to the tank.During switching all three ports (P, Sand T) are momentarily interconnected(negative switching overlap). If a solenoidoperated2/2 directional poppet valve isfitted, automatic discharge is possible (e.g.in the event of a power failure or shutdown)6.5. NOTESBall valves are not designed to be used asflow control valves; therefore they shouldalways be either fully open or fully closed,to avoid damaging the sealing cups.To ensure correct functioning, pressureand temperature specifications must beobserved.systempressureshut-offsystemspressureshut-offP - pump connectionS - accumulatorKH - change-over ball valveDB - pressure relief valveM - pressure gaugeT - tank connectionThe DSV10 can be used as a costeffectivealternative to the SAF10. Unlikethe SAF10, the DSV10 shuts off whendischarging simultaneously to the tank.E 3.551.19/03.12121

6.6. SPECIFICATIONS6.6.1 SymbolsDSV10MDSV10M-T-ballDSV10EY6.6.4 Installation positionoptional6.6.5 Operating fluidsMineral oil to DIN 51524Part 1 and part 2(other fluids on request)Viscosity range:Min. 10 mm²/sMax. 380 mm²/sFiltration:Max. permitted contamination of theoperating fluid to SAE AS 4059 Class 11.We therefore recommend a filter with aminimum retention rate of ß 20 ≥ 100. Thefitting of filters and the regular replacementof filter elements guarantees correctoperation, reduces wear and tear andincreases the service life.6.6.6 Permitted operating temperature-10 °C ... +80 °C(ambient temperature forE version limited to-10 °C ... +60 °C)6.6.7 Maximum operating pressure350 bar6.6.8 ∆p - Q graphmeasured att oil= 50 °Cν = 30 mm²/sFlow rate from P to S6.6.9 Model with solenoid-operatedpressure reliefTypeSolenoid-operated by means of pressuretight,oil-immersed, single-strokesolenoids in accordance with VDE 0580.Actuating solenoid with male connector toDIN 43650, standard for general industrialapplications, available for 24 V DCand 230 V AC.Type of currentDC solenoidWhen connected to AC voltage thenecessary DC voltage is produced bymeans of a bridge rectifier connector.Voltage tolerance±15% of nominal voltageNominal currentdependent on the nominal voltage24 V DC 0.80 A230 V AC 0.11 APower consumption:p 20= 18 WDutyContinuousSwitching timeDependent on symbol, pressure across theindividual ports and flow rate.WSM06020Y:on: 50 ms, off: 35 msWSM06020Z:on: 35 ms, off: 50 ms6.7. SPARE PARTSPlease see brochure:• z3-way safety block DSVNo. 5.251DSV10EZFlow rate from S to T6.6.2 Type of constructionBall valve isolating devicePressure relief valve is a direct-actingpoppet valvePoppet valve is pilot-operated6.6.3 MaterialsHousing and blanking plug in steel, surfaceprotection: phosphated.Ball in steel, hard-chromed.Pressure relief valve and poppet valvein high tensile steel, closing element inhardened and ground steel, wear-resistant,surface protection: phosphated.Ball seal in high quality synthetic material(POM) soft seals in Perbunan (NBR).Cranked handle SW09 in red anodisedaluminium.E 3.551.19/03.12p [bar]Q [l/min]p [bar]Q [l/min]122

6.8. Model code for DSV10(also order example)DSV 10 M . – 4 . 1 / 1 / X / T ... – G 24 – Z4 ...3-way safety blockNominal bore10DischargeM = manual dischargeE = solenoid-operated and manual dischargeFor manual/ solenoid-operateddischarge, also indicateY = open when de-energisedZ = closed when de-energisedType of pressure relief valve4 = DB12With/without fittedpressure relief valve1 = with pressure relief valve0 = without pressure relief valveAccumulator connection1 = M33x2Series(determined by manufacturer)Setting of pressure relief valveT = pressure-set and lead-sealed by TÜVV = adjustable using toolF = preset by manufacturerx = no details (for model without relief valve cartridge)Pressure setting... = pressure setting... = pressure rangexxx = no details (for model without relief valve cartridge)Pressure setting rangeDB12 – 150 barDB12 – 250 barDB12 – 350 barType of voltage for solenoidG = DC voltageW = AC voltageNominal voltage for solenoid24 = 24 Volt for type G voltage (DC)230 = 230 Volt for type W voltage (AC)Type of connection for solenoidZ4 = connector to DIN 43650 - AF2 - PG11Supplementary detailsT-Ball = ball bore (180° switch)FKM (Viton ® ) = O-ring sealE 3.551.19/03.12123

6.9. DIMENSIONSDSV10 3-way safety block4 x mounting hole Ø92/2 directional valve2SV5system connectionoptionalcoil can be turned through 360°Shut-off valvesystem connectionoptionalM33x2ISO 6149/DIN 3852 Part 3Pressure relief valve DB12Type B [mm] WeightDSV10M... 45 3.5 kgDSV10E... 60 3.9 kgE 3.551.19/03.12DSV10 Preferred modelsType Part no. Type Part no.DSV-10-M-4.0/1/X/XXXX 555999 DSV-10-EY-4.0/1/X/XXXX-G24-Z4 557367DSV-10-M-4.1/1/X/T035 555968 DSV-10-EY-4.1/1/X/T035-G24-Z4 555980DSV-10-M-4.1/1/X/T050 555969 DSV-10-EY-4.1/1/X/T050-G24-Z4 555981DSV-10-M-4.1/1/X/T070 555970 DSV-10-EY-4.1/1/X/T070-G24-Z4 555982DSV-10-M-4.1/1/X/T100 555971 DSV-10-EY-4.1/1/X/T100-G24-Z4 555983DSV-10-M-4.1/1/X/T150 555972 DSV-10-EY-4.1/1/X/T150-G24-Z4 555984DSV-10-M-4.1/1/X/T200 555973 DSV-10-EY-4.1/1/X/T200-G24-Z4 555985DSV-10-M-4.1/1/X/T210 555974 DSV-10-EY-4.1/1/X/T210-G24-Z4 555986DSV-10-M-4.1/1/X/T250 555975 DSV-10-EY-4.1/1/X/T250-G24-Z4 555987DSV-10-M-4.1/1/X/T300 555976 DSV-10-EY-4.1/1/X/T300-G24-Z4 555988DSV-10-M-4.1/1/X/T315 555977 DSV-10-EY-4.1/1/X/T315-G24-Z4 555989DSV-10-M-4.1/1/X/T330 555978 DSV-10-EY-4.1/1/X/T330-G24-Z4 555990DSV-10-M-4.1/1/X/T350 555979 DSV-10-EY-4.1/1/X/T350-G24-Z4 555991124

7. Accessories: ADAPTERS FOR SAF/DSV107.1. Adapters for low pressure bladder accumulatorsN500O-ring 102x3S adaptersafety andshut-off blockTypeAccumulatortypeVolume[l]Adapter Part no. 1)NBR/Carbon steelCorrespondingS adapterPart no. 1)NBR/Carbon steelSAF10/20 and DSV10S 13 369481SB35 2.5 ... 50 N500 367229SAF32 S 309 3667157.2. Adapters for diaphragm accumulatorsO-ringO-ringType Accumulator Volumetype [l]SBO...E- 0.075 ... 1.4SAF10/20 SBO...A6- 0.1 ... 210-1.3DSV10 SBO...E- 2.0 ... 3.5SBO...A6- 1.3 ... 4¹ ) others on requestD1 Thread Part no. 1)NBR/Carbon steelAdapterKSWL1[mm]L2[mm]D2[mm]O-ringG 1/2 A 369485 S 301433 22x34117.5G 3/4 A 369486 S 31 16 40 28x37.3. Adapters for piston accumulatorsDiagram 1 Diagram 2Type Accumulator Volume Adapter Part no. 1) Diag. D1 D2 O-ring Corresponding Part no. 1)type [l]NBR/Carbon steel [mm] [mm]S adapter NBR/Carbon steelSAF10/20 SK210/350 - 2.5 ... 7.5 K 406 374929 1 G 1 1/4 G 1 35x3 S 12 369480DSV10 SK210/350 - 10 ... 45 K 408 374931G 1 1/2 53x3 S 13 3694812 G 2SAF32 SK210/350 - 50 ... 120 K 409 374933 G 2 62x3 S 309 3667151)others on requestE 3.551.19/03.12125

7.4. TO CONNECT THE SAFETY AND SHUT-OFF BLOCK WITH THE ACCUMULATORTypeAdaptor for standard bladder accumulatorO-ringO-ringSAF10SAF20DSV10O-ring29.7x2.8O-ring29.7x2.8O-ring29.7x2.8Diagram 1 Diagram 2 Diagram 3O-ringO-ring62x4O-ringSAF324 holesO-ring 37.2x34 holesO-ring37.2x34 holesO-ring37.2x34 holesO-ring37.2x3Diagram 4 Diagram 5 Diagram 6 Diagram 7Type Accumulator type Volume D1 Thread Adapter Part no. 2) K L1 L2 D2 O-ring Diag.NBR/Carbon SW[l]steel [mm] [mm] [mm] [mm] [mm]SB330/400- 0.6 ... 1 G 3/4A S 10 00369479 41 28 16 – 17x3SB550/600- 1 ... 5 G 1A S 11 00372750 34– 22x34617SB330/400- 2.5 ... 6 G 1 1/4A S 12 00369480 37 – 30x3 1SB330/400- 10 ... 50G 2A S 13 00369481 65 44 21 – 48x3SB550/600- 10 ... 50SAF10– M30x1.5 S 20 00369482 41 15 18 40 32x2SAF20 Connection with– M40x1.5 S 21 00369483 5554 43x3 2DSV10 metric fine thread20 21– M50x1.5 S 22 00369484 65 64 53x3G 3/4 S 367861 00369489 41 18 50 – –SB330/400- 2.5 ... 50 G 1 S 379766 00369490 46 20 55 – – 3G 1 1/4 S 379767 00369498 65 22 60 – –SB330/400- 0.6 ... 1 G 3/4A S 305 1) 00366723 – 28 58 – 17x3SB550/600- 1 ... 5 G 1A S 306 1) 02102855 – 34 64 – 22x3SB330/400- 2.5 ... 6 G 1 1/4A S 307 1) 00366724 – 37 67 – 30x3 4SB330/400- 10 ... 50S 309 1) 00366715 –74 –G 2A44SB550/600- 10 ... 50 S 308 1) 00376813 – 115 –48x3SB330H- 10 ... 50 G 2 1/2A S 365922 00377283 – 50 150 – 62x4 5SAF32– M30x1.5 S 330 1) 00366735 – 15 47 45 32x2Connection with– M40x1.5 S 340 6metric fine thread00366736 –60 43x320 51– M50x1.5 S 350 1) 00366737 – 75 53x3G 1 S 365637 02106583 – 20– –60SB330/400- 10 ... 50 G 1 1/4 S 369658 02106578 – 22 – – 7G 1 1/2 S 237838 02103869 – 24 65 – –1)Adapter supplied with 4 off hex. socket cap screws M16x45 (part no. 6032726) Torque 130 Nm2)others on requestE 3.551.19/03.12126

7.5. Gauge isolator valveTest point adapter PAtest pointswivel nutVent screwpositional lock nutConsisting of: Isolator valve AG (Part no. 611903) with bleed valve swivel nut, positional lock nut and test point to DIN 16271 andtest point adapter PA with seals (Part no. 370754)8. NOTEThe information in this brochure relates tothe operating conditions andapplications described.For applications and operating conditionsnot described, please contact the relevanttechnical department.Subject to technical modifications.HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.551.19/03.12127

E 3.551.19/03.12128

Safety Equipment forHydraulic Accumulators1. DESCRIPTION1.1. GeneralHydraulic accumulators are pressurevessels, as defined by PED 97/23/EC, andas such their manufacture is subject to thestatutory pressure equipment regulations.For safety in the workplace, systemmanufacturers and operators must draw upa risk assessment for the particular site.These must take into account possiblerisks at the installation site, particularly incombination with external factors.Fundamental risks affecting hydraulicaccumulators are:• zExcessive pressure and• zTemperature increase(e.g. in the event of an external fire).HYDAC provides the appropriate safetyequipment to protect accumulators fromexcessive values on the gas and fluid side;see also catalogue section:• zAccumulatorsNo. 3.0002. PROTECTION ON THEGAS SIDE2.1. TEMPERATURE FUSEHYDAC offers two different kinds oftemperature fuse.In addition to the proven temperature fusein carbon steel and stainless steel, HYDACalso offers a temperature fuse of the typeGMP6, which is approved according toPED 97/23/EC.It is made of stainless steel and has a CEmark.2.1.2 Design / Technical specificationsTemperature fuse designTechnical specificationsPermitted operating pressure:≤ 450 barTemperature range:-10 °C ... +80 °CMelting point:between +160 °C and +170 °CHousingDischargeopeningScrew-onthreadTemperature fuse GMP6 designHousingDischargeopening2.1.3 Preferred modelsPart no. Description363501 Temperature fuse7/8-14UNF3114417 Temperature fuse7/8-14UNFwith crane hook3517438 GMP6-10-CE1637...for piston accumulators3521196 GMP6-10-CE1637...for bladder anddiaphragm accumulators2.1.4 Installing the temperature fuseSimple to retrofit by replacing the sealingcap with the temperature fuse.Gas side of the accumulator shown withsealing cap2.1.1 Mode of operationTemperature fuses are "devices with asafety function" and are used to releasethe gas pressure by discharging thenitrogen completely when a rise intemperature reaches unacceptable levels(e.g. in the case of fire).Technical specificationsPermitted operating pressure:50 ... 350 barTemperature range:-40 °C ... +80 °CMelting point:between +160 °C and +180 °CScrew-inthreadGas side of the accumulator shown withtemperature fuseInstalling the temperature fuse GMP6Please read the Operating Manual! GSV/GMPNo. 3.504.CEE 3.552.2/03.12129

2.2. BURSTING DISC2.2.1 DesignProtection by discharging the nitrogencompletely when the pressure exceeds thepermitted level.2.3. GAS SAFETY VALVE2.3.1 Assembly and dimensionshex. 32DischargeopeningGSV6 - 10 - 1637EN ISO 4126-1.6.G.195 KG/H 330 BARTS -20/80 °C PS 370 BAR 14/03/452Screw-inthreadsteel/elastomer gasketlead-seal2.3.2 FunctionThe gas safety valve provides protection by reducing the pressure in a controlled wayif pressure exceeds the permitted level unexpectedly. It is pre-set on the pressure sideand lead-sealed by the authorised representative. It is also supplied with a certificate ofconformity and a type approval.2.2.2 FunctionIf the pressure exceeds the permitted level,the bursting disc shatters, permanentlyopening the port. This reduces the gaspressure by discharging the nitrogencompletely.Bursting discs are designed for differentburst pressures and are supplied with acertificate of conformity.Bursting discs are made either entirely ofstainless steel, or from an alloy based onstainless steel and nickel.2.2.3 Preferred modelsPart no. 1) Description Burstpressure± 10%at 50 °C3156148 Bursting disc 210 barplug 1/4"NPT3156152 Bursting disc 350 barplug 1/4"NPT3156155 Bursting discplug 1/4"NPT450 bar1)higher pressures, different threads and burstpressure tolerances on request2.3.3 Model code(also order example)Gas safety valveComponent codeFlow rate Q [kg/h](see table, Point 2.3.5)Pressure setting p [bar](see table, Point 2.3.5)2.3.4 Technical specificationsDesignPED 97/23/EC, EN ISO4126-1,EN 13445-6, others on requestModule categoryIV to PED 97/23/ECModule B + D (EC prototype testing)Module G (EC individual testing) onrequestNominal size6 mmMaterialStainless steel, closing element withflexible seat sealMediumNitrogen (N 2)Operating pressure range30 ... 370 barTemperature range-20 °C ... +80 °CWeight1.1 kgGSV6-10 – CE1637.ENISO4126-1.6.G. 195. 330E 3.552.2/03.12130

2.3.5 Preferred modelsQ [kg/h] p [bar] ± 10 % Part no. 1)15 30 312396520 40 312396628 50 312396735 60 312402840 70 312402945 80 312403050 90 312403158 100 312403265 110 312403370 120 312403475 130 312403583 140 312403688 150 312403795 160 3124038100 170 3124039105 180 3124040110 190 3124041118 200 3124042125 210 3124043130 220 3124044135 230 3124045140 240 3124046148 250 3124047155 260 3124048160 270 3124049165 280 3124050170 290 3124051178 300 3124052185 310 3124053190 320 3124054195 330 3124055200 340 3124056205 350 3124057210 360 3153706216 370 31430151)others on request.> 350 bar = surcharge for individualEC testing2.3.6 Installing the gas safety valve GSVThe self-centring gasket means that thisvalve can be installed simply and securelyin any position.Please read the Operating Manual!• zGSV/GMPNo. 3.504.CE2.3.7 Adapter for gas safety valve GSV6To protect standard and low pressure bladder accumulators, the adapter shown belowmust be ordered with the gas safety valve GSV6.Pressure rangeAdapter body*Adapter, completeGas safety valvePart no.Part no.30- 350 bar 00363713 02103381* p max= 400 barE 3.552.2/03.12131

2.4. GAS SAFETY BLOCK2.4.1 Design2.4.4 Model code(also order example)GSB450 – 1 – 1 – 5 – 1 – 1 – 350SeriesMaterial1 = Standard2 = Stainless steelAccumulator connection1 = Connection for SK / SBO2 = Connection for SB9 = Special connectionThe gas safety block GSB450 consists ofa block made of brass (other materials onrequest) with integrated breather and shutoffvalve plus ports for:• zPressure gauge• zGas safety valve (GSV6)• zGas charging valve (e.g. Minimess)• zPressure transmitter or pressure switch• zBursting disc or temperature fuseThe connection for the gas safety valve isdesigned as a check valve. Therefore thevalve can be changed, even if the systemis pressurized.2.4.2 FunctionThe GSB450 is an adapter block, which ismounted on an accumulator on the gasside and which can be fitted with variouspressure devices, charging equipment,safety valves and other safetycomponents.2.4.3 Advantages• zCompact construction• zFlexible connection options• zVariable indication options: bar, MPa orpsi, analogue or digital (optional)• zPressure indication according tocustomer requirement• zAccumulator can be charged withnitrogen, directly via Minimess valve• zPre-charge pressure can be checkedwithout using FPU-1Monitoring options0 = None1 = 0 – 25 bar2 = 0 – 100 bar3 = 0 – 160 bar4 = 0 – 250 bar5 = 0 – 400 bar9 = Special pressure gaugeGas charging connection0 = None1 = Standard Minimess series 16202 = Minimess gas charging valve series 16159 = SpecialSafety equipment0 = None1 = GSV2 = Bursting disc3 = Temperature fusePressure range of the safety equipmentE 3.552.2/03.12132

2.4.5 Technical specificationsMediumNitrogen (N 2)Permitted operating temperature-20 °C ... +80 °CMax. operating pressure400 bar / 5800 psiAccumulator connectionBladder accumulator:7/8-14UNF with adapterFor bladder accumulators, the appropriateadapter is supplied. All other connectionsare sealed with blanking plugs.Piston and diaphragm accumulators:M28x1.5For piston and diaphragm accumulatorsthe connection is a lock-nut with a M28x1.5thread as standard.2.4.6 Installation of gas safety block GSBPlease read the Operating Manual!• zGSBNo. 3.505.CE2.4.7 ModelsHydraulic accumulator connectionIllustration with adapter M28x1.5 / 7/8-14UNFBasic versionIn the basic version, the GSB450 issupplied with shut-off valve, air bleedvalve, pressure gauge (0 - 400 bar,Ø 63 mm) and gas charging connectionin Minimess screw coupling series 1620(M16x2).Options The GSB450 can be suppliedwith the following options*:• zPressure gauge with different displayranges (Ø 63 mm - at no additional cost)and different displays:bar, MPa or psi; analogue or digital• zPressure gauges of various accuracyclasses and glycerin-filled pressuregauges• zMinimess gas charging valve series1615 (M16x1.5) in stainless steel version• zVersion for lower and highertemperatures• zVersion where all steel parts arestainless steel (A4)• zGas safety valve GSV6• zSafety devices (bursting disc,temperature fuse)• zPressure transmitter (e.g. HDA)• zPressure switch (e.g. EDS)* on request and must be ordered separately and atadditional costE 3.552.2/03.12133

2.4.8 Block connectionsConnections Size Description Options available asaccessoriesA1GSV6 connection, incl.G 1/2-ISO228pilot-operated check valveSealing plugA2A3A4A52.4.9 ValvesTypeV1V2G1/4-ISO228Connection for chargingand safety devicesConnection for pressuregaugeGas charging connectionGeneral connectionsDescriptionShut-off valveAir bleed valve(internal hex SW4)Charging connection forremote chargingBursting disc, temperaturefusePressure gauge in variousmodels and various differentindication ranges(0 - 400 bar, 0 - 5714 PSI)Minimess M16x2; M16x1.5gas-tightPressure transmittere.g. HYDAC HDA, EDS3. PROTECTION ON THEFLUID SIDE3.1. GENERALThe fluid side must be protected againstpressures which exceed the permittedoperating pressures by fitting approvedand appropriate safety valves.HYDAC offers pressure relief valves(DB12) which have a pressure setting ofup to 400 bar (set by HYDAC). The valvecarries the CE mark and is built into Safetyand Shut-off Blocks in the series DSV10and SAF in nominal sizes DN10 and DN50and is lead-sealed.Further information is available from thefollowing catalogue section:• zSafety and Shut-off Block SAF/DSVNo. 3.5514. NOTEThe information in this brochure relates tothe operating conditions andapplications described. For applicationsand operating conditions not described,please contact the relevant technicaldepartment.Subject to technical modifications.E 3.552.2/03.121342.4.10 Connecting hosesConnecting hoses are suitable for the particular maximum permitted operating pressureprinted on them and for 10,000 charging processes.(HYDAC charging hoses comply with the EC Machinery Directive,DIN EN 982 and DIN EN 853 to 857.)Gas connection of nitrogenbottlesW30x2W24.32x1/14Minimess portM16x2M16x2Length Part no.[m]2.5 34344544 34344572.5 34344244 343445110 3526858Suitable adapters for foreign nitrogen bottles can be found in the following cataloguesection: Universal Charging and Testing Unit FPU-1No. 3.501HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.com

Supports forHydraulic Accumulators1. Description1.1. GeneralHYDAC supports are used to mount alltypes of hydraulic accumulator safelyand simply, irrespective of the installationposition and location. Clamps, consolesand complete accumulator sets areavailable.1.2. UseThe supports are designed for static use.For dynamic stresses, specially designedclamps are available on request.2. Selection tablesfor supports2.1. BLADDERACCUMULATOR1TypeClamps*Nominal volume [l]SB330SB400SB 550SB500 /SB60012.5+54+610-2432-500.5410-2032-5012.5-510-2032-502.5-510-2032-502.5-510-2032-502032-502032-5050HyRac 89-92 ST 1HyRac 106-114/1152 2H3 STHyRac 110-118/1241 2H10 STHyRac 121-129/1331 2H8 STHyRac 167-175/1781 1H5 STHyRac 202-210/2141 2 1 2H8 STHyRac 216-224/2261 2 1 2H5 STHyRac 223-230/2311 2 2H3 STHyRac 225-234/2341 2H3 STHSS 242 1 2ConsolesSB35SB40SB35HSB35HBSNKBK 167 / G 1 1234KBK 222 / G 1 1 1 1 1 1 1 1 1 1 1KHF 210 / G 1 1 1 1Accumulator setSEB 1 1 1 1 1 1 1SEH 1 1 1SEN 1 1 1SEM 1 1 11 Clamp2 Console3 Rubber support ring4 Back plateSEHF 1 1SEHB 1 1* The number of clamps can vary depending on the requirements and on the length of the accumulator.These are recommendations.E 3.502.24/03.12135

2.2. Piston accumulator211 Clamp2 Console3 Back plate3Piston diameter [mm]50 60 80 100 150 180 250 > 250Accumulator external diameter [mm]60 70 95 100 120 125 180 210 220 286 300 > 300TypeClamps SK280*HRGKSM 0 R 58-61/62 ST HRGKSM 0 R 70-73/73 ST HRGKSM 0 R 92-95/96 STHRGKSM 1 R 119-127/124 STClamps SK Standard*HyRac 96-100/100 STHyRac 121-129/133 H8 STHyRac 176-185/187 H5 STHyRac 209-217/223 H10 STHyRac 216-224/226 H5 STHSS 286HSS 310ConsolesKBK 126 1KBK 219 1 1KBK 310 1 1on requeston requestonrequest* Selecting the correct clamp depends on the external diameter of the accumulator. Depending on the applicationand length of the accumulator, we recommend that several clamps are used. Clamps must be mounted near theend caps in order to prevent deformation of the cylinder.2.3. DIAPHRAGMACCUMULATOR(WELD TYPE)1 Clamp1Accumulator typeSBO250-0.075ESBO210-0.16ESBO210-0.32ESBO210-0.5ESBO100-0.7ESBO330-0.6ESBO330-0.7ESBO210-0.75ESBO330-0.75ESBO200-1ESBO140-1.4ESBO210-1.4ESBO330-1.4ESBO100-2ESBO210-2ESBO210-2.8ESBO250-3.5ESBO330-2ESBO330-2.8ESBO330-3.5EClampsHyRac 62-65 STHyRac 73-76 STHyRac 92-95/96 STHyRac 100-105/106 H3 STHyRac 106-114/115 H3 STHyRac 110-118/124 H10 STHyRac 121-129/133 H8 STHyRac 133-142/142 H3 STHyRac 143-151/151 H3 STHyRac 152-159/160 H3 STHyRac 160-167/169 H5 STHyRac 167-175/178 H5 ST2.4. DIAPHRAGMACCUMULATOR(SCREW TYPE)Accumulator typeConsoleSBO210-1.3A6 KMS 200SBO400-1.3A6 KMS 210SBO100-2.0A6SBO250-2.0A6KMS 220SBO210-2.8A6 KMS 250SBO400-2.8A6 KMS 280SBO210-4.0A6 KMS 300SBO400-4.0A6 KMS 310E 3.502.24/03.121 Console1136

3. CLAMPSHRGKSMHyRac ( ØD ≤ 100 mm ) HyRac ( ØD ≥ 100 mm )Fastening, FootClamping bandInsertzinc-platedstainless steelLDPEFastening, FootClamping bandInsertzinc-platedstainless steelPEFastening, FootClamping bandInsertzinc-platedstainless steelPE, NBRDesignation Part no. A B C max ØD (from - to) H (from - to) E L S K max. Weight[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]HRGKSM 0 R 58-61/62 ST 301844283 58 - 61 37.3 - 38.80.16HRGKSM 0 R 70-73/73 ST 3018444 120 85 93 70 - 73 42.0 - 43.5 40 60.213 –HRGKSM 0 R 92-95/96 ST 444995 115 92 - 95 52.5 - 54.0 0.24HRGKSM 1 R 119-127/124 ST 444505 158 100 154 119 - 127 66.8 - 70.8 50 18 0.36HyRac 62-65 ST 44503785 62 - 65 38 - 39.50.16HyRac 73-76 ST 445038 96 73 - 76 43.5 - 45 0.16HyRac 89-92 ST 445039 120 85 112 89 - 92 51 - 52.5 40 8 3 – 0.17HyRac 92-95/96 ST 445040 115 92 - 95 52.5 - 54 0.17HyRac 96-100/100 ST 445041 120 96 - 100 54.5 - 56.5 0.17HyRac 100-105/106 H3 ST 444904135 100 - 105 59 - 620.40HyRac 106-114/115 H3 ST 444905 143 106 - 114 62.5 - 66 0.41HyRac 110-118/124 H10 ST 445042 156 110 - 118 72.5 - 77 0.42HyRac 121-129/133 H8 ST 444906 156 100 165 121 - 129 75.5 - 80 60 18 3 – 0.43HyRac 133-142/142 H3 ST 444907 174 133 - 142 76.5 - 82.5 0.44HyRac 143-151/151 H3 ST 444908 182 143 - 151 83 - 86.5 0.45HyRac 152-159/160 H3 ST 444909 191 152 - 159 87 - 91 0.46HyRac 160-167/169 H5 ST 444910197 160 - 167 89 - 930.70HyRac 167-175/178 H5 ST 445043 207 167 - 175 92.5 - 96.5 0.72HyRac 176-185/187 H5 ST 445044 241 176 - 185 97 - 102.5 0.75HyRac 202-210/214 H8 ST 445045 245 202 - 210 116 - 120 0.76236 15260 32 4 –HyRac 209-217/223 H10 ST 445046 255 209 - 217 122.5 - 126.5 0.77HyRac 216-224/226 H5 ST 445047 256 216 - 224 120 - 124 0.77HyRac 223-230/231 H3 ST 445048 259 223 - 230 120.5 - 123.5 0.78HyRac 225-234/234 H3 ST 445049 265 225 - 234 123 - 127.5 0.79Model/order code (example):HyRac 167-175/178 H5 ST 445043E 3.502.24/03.12137

HSSClampzinc-platedInsertNBRDescription Part no. A B C max ØD (from - to) H (from - to) E L S K max. Weight[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]HSS 222/229 235224 270 216 244 226 123295 1.70HSS 242 362712 268 216 265 242 136 305 1.70HSS 286 237395 332 280 314 286 163 40 Ø15 4 355 2.10HSS 310 237389 332 280 333 310 170 380 2.10HSS 360 355592 427 365 383 360 195 424 2.50Model/order code (example):HSS 222/229 235224E 3.502.24/03.12138

4. CONSOLES4.1. CONSOLE KBK FOR BLADDER AND PISTON ACCUMULATORConsole KBKRubber support ring GG 167*G 222G 360* Ø22 on KBK 310 and KBK 360Type Mat. Part no. A B C ØD E F G H Weight[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]126 290530 175 100 60 65 36 – 150 77 1.1167 238526 260 200 120 75 35 225 92 2.5219 238042 270 180 100 135 80 40 250 6.5STZN123222 3002160 260 200 170 75 35 225 2.4310 238043 330 220 200 190 140 340 170 18.360360 357959 390 270 240 211 180 390 195 20.1Type Material Part no.––167 236997– –NBR222 236996– –360 355966Model/order code (example):KBK 167 STZN 238526G 167 NBR 2369974.2. CONSOLE KMS FOR SCREW TYPE DIAPHRAGM ACCUMULATORThe screw type diaphragm accumulator has threadedbores M8 in the lock nut for fixing to the KMS console.Type Mat. Part no. A B C ØD ØP E F G H ØI Weight[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]200 359931 270 180148 160 80 40 2506.5210 358989170 180100123 14220 359922 260 200170 188 75 35 225 2.4250 359924 192 204STZN280 359925215 230300 359926 220 235330 220 200310 359927 245 265140 60 340 170 22 18.3320 359928 290 305Model/order code (example):KMS 200 STZN 359931E 3.502.24/03.12139

5. ACCUMULATOR SET FOR BLADDER ACCUMULATORSSEB, SEH, SEM5.1. SEB for SB330/440Accum- Part no. Vol. A B C D E F G H L Julatorset[l] [ mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]SEB 2.5 290787 2.5 460 310 198 138 133 214 220 410 75 –SEB 4 238403 4 410 320 330 270152 265SEB 6 2115851 6–SEB 10 238407 10 570 420270 45 95SEB 20 240598 20 330 270500 75 111180 317SEB 32 238409 321340 1190 500 1160SEB 50 240599 50This accumulator set SEB is also available with a SAF and SB330 as a compact unit(ACCUSET SB330).See catalogue section:• zACCUSET SBNo. 3.5035.2. SEH for SB500/550/600Accum- Part no. Vol. A B C D E F G H L Julatorset[l] [ mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]SEH 2.5 2105194 2.5 460 310 410198 138 133.5 223 220SEH 5 2105195 5 750 600 650–SEH 10 378952 10330570 420–SEH 20 298181 20 500330 270 194 323SEH 32 298182 321340 1190 500 1160SEH 50 298183 50415330751115.3. SEM for SB40Accum- Part no. Vol. A B C D E F G H L Julatorset[l] [ mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]SEM 2.5 3007402 2.5 460 310 410198 138 121.5 201 220SEM 5 3007423 5 750 600 650–SEM 10 3007424 10330570 420–SEM 20 3007425 20 500330 270 172 310SEM 32 3007426 321340 1190 500 1160SEM 50 3007427 5075111E 3.502.24/03.12140

SEHB5.4. SEhB for SB35HBAccumulatorsetPart no. Vol. A B E F G H L J[l] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]– 500SEHB 20 3007431 20 570 420SEHB 32 3007432 32 1340 1190 172 310 500 116075 111SEHB 50 3007433 50 1340 1190 500 1160Console Mat. Part no. A B C ØD E F G H Weight[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]KHF 210 STZN 239965 260 200 100 170 75 35 230 123 2.5Model/order code (example):SEB 10 238407KHF 210The accumulator sets SEHF/SEHB are supplied with console KHF 210 / G which can beopened at the front for easier mounting of the bladder accumulator.6. NOTEThe information in this brochure relates tothe operating conditions andapplications described.For applications and operating conditionsnot described, please contact the relevanttechnical department.Subject to technical modifications.HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 3.502.24/03.12141

E 3.502.24/03.12142

ACCUSET SB1. DescriptionThe HYDAC accumulator unit ACCUSETSB consists of a bladder accumulatorSB, a safety and shut-off block SAF andthe appropriate accumulator set SEB.The parts are designed for optimumcompatibility and provide a compact,ready-to-install unit.This space-saving combination simplifiesthe connection of the accumulator to thehydraulic system, reduces maintenancecosts and considerably reduces assemblycosts.Advantages:• zSimple and secure mounting of theaccumulator at the installation site,• zConnection of the accumulator with ahydraulic system via a safety andshut-off block,• zProtects the accumulator from excessivepressure,• zDischarge of the accumulator to the tankvia a pressure release valve,• zSeparation of the accumulator from thesystem,• zTwo additional hydraulic connections onthe shut-off block for accessories (e.g.pressure gauge).1.1. STANDARD BLADDERACCUMULATOR SB330with a nominal volume of 1 ... 50 litres.Special accumulators available on request.See catalogue section:• zBladder Accumulators StandardNo. 3.201Please read the Operating Manual!No. 3.201.CE1.2. SAFETY AND SHUT OFFBLOCK SAFin nominal sizes 10, 20 and 32,with manual or solenoid-operated/manual discharge and with the directoperatedpressure relief valve DB12with CE marking, in accordance withthe regulations of DIN EN 14359“Accumulators for hydraulic applications”and the European Pressure EquipmentDirective PED 97/23/EC.See catalogue section:• zSafety and Shut-off Block SAF/DSVNo. 3.5511.3. ACCUMULATOR SETSEBfor mounting the bladder accumulator withclamps, back plate, console and rubbersupport ring.See catalogue section:• zSupports for Hydraulic AccumulatorsNo. 3.5022. TECHNICALSPECIFICATIONSDesign:Pressure Equipment DirectivePED 97/23/EC 1)Permitted operating pressure:330 bar 1)Permitted temperature range:-10 ... +80 °C (NBR) 1)Temperatures exceeding this range (e.g.in the event of an external fire) can resultin the accumulator bursting. To preventthis, HYDAC can provide additionaltemperature fuses and bursting discs.Operating medium:Hydraulic fluids of types HL, HLP, HFA,HFB, HFC (NBR)Pressure limit:DB12 set to 330 bar 1)Release valve:Operating voltage 24 V DC 1)Fluid connection P:See table at point 5.Surface:Accumulator primed, SAF blockphosphate-plated, accumulator setzinc-plated.The accumulator is supplied with5 ... 8 bar protective storage pressure.Before commissioning, the accumulatormust be pre-charged using the FPU-1.Recommendation: approx. 0.9 • p min at t maxSee catalogue section:• zAccumulatorsNo. 3.000For selection of gas pre-charge pressure,see Operating Manual:• zCharging and Testing Unit FPU-1No. 3.5011)others on requestE 3.503.3/03.12143

3. MODEL CODE(also order example)Type of accumulatorSB = bladder accumulatorAccumulator seriesNominal volume [l]Fluid connectionA = standard connectionGas valve1 = standard modelMaterial of fluid connection / block1 = carbon steel2 = stainless steelShell material1 = carbon steelAccumulator bladder/seal material2 = NBR / NBR3 = ECO / NBR4 = IIR / EPDM6 = FKM / FKMCertification codeSAF block seriesACCUSET SB 330 – 10 A 1 / 1 1 2 U – 10 Y 1 – 330Type of directional poppet valveM = manual dischargeY = solenoid-operated and manual discharge (open when de-energised))Z = solenoid-operated and manual discharge (closed when de-energised)Type of voltage - directional poppet valve1 = 24 V DC (only on Y or Z model)Permitted operating pressure/cracking pressure of the pressure relief valve [bar]Circuit diagramto the circuitE 3.503.3/03.12144

4. PREFERRED MODELSDescriptionPart no.SB330-1A1/112U-330ASB330-2.5A1/112U-330ASB330-4A1/112U-330ASB330-6A1/112U-330ASB330-10A1/112U-330ASB330-13A1/112U-330ASB330-20A1/112U-330ASB330-24A1/112U-330ASB330-32A1/112U-330ASB330-50A1/112U-330ASAF10M12T330ASAF10E12Y1T330ASAF20M12T330ASAF20E12Y1T330ASAF32M12T330ASAF32E12Y1T330AACCUSET SB330-1A1/112U-10M-330 3033471 l lACCUSET SB330-1A1/112U-10Y1-330 3033472 l lACCUSET SB330-2.5A1/112U-10M-330 3033473 l lACCUSET SB330-2.5A1/112U-10Y1-330 3033474 l lACCUSET SB330-4A1/112U-10M-330 3033475 l lACCUSET SB330-4A1/112U-10Y1-330 3033476 l lACCUSET SB330-6A1/112U-10M-330 3033477 l lACCUSET SB330-6A1/112U-10Y1-330 3033478 l lACCUSET SB330-10A1/112U-10M-330 3033479 l lACCUSET SB330-10A1/112U-10Y1-330 3033480 l lACCUSET SB330-13A1/112U-10M-330 3033481 l lACCUSET SB330-13A1/112U-10Y1-330 3033482 l lACCUSET SB330-13A1/112U-20M-330 3033483 l lACCUSET SB330-13A1/112U-20Y1-330 3033484 l lACCUSET SB330-20A1/112U-20M-330 3033485 l lACCUSET SB330-20A1/112U-20Y1-330 3033486 l lACCUSET SB330-24A1/112U-20M-330 3033487 l lACCUSET SB330-24A1/112U-20Y1-330 3033488 l lACCUSET SB330-32A1/112U-20M-330 3033489 l lACCUSET SB330-32A1/112U-20Y1-330 3033490 l lACCUSET SB330-32A1/112U-32M-330 3033491 l lACCUSET SB330-32A1/112U-32Y1-330 3033492 l lACCUSET SB330-50A1/112U-20M-330 3033493 l lACCUSET SB330-50A1/112U-20Y1-330 3033494 l lACCUSET SB330-50A1/112U-32M-330 3033495 l lACCUSET SB330-50A1/112U-32Y1-330 3033496 l lOther combinations and models available on request.E 3.503.3/03.12145

5. DimensionsDescriptionItemAccumulator shell 1Gas valve 2Oil valve 3Adapter S 4Switching handle 5Release spindle 6SAF safety block 7Pressure relief valve 8Connection for pressure gauge 9Release valve 10Console 11HyRac clamp 12Back plate 13BladderaccumulatorA max[mm]B[mm]C[mm]ØD max[mm]E[mm]F[mm]I[mm]G[mm]H[mm]SB330-1 1) 302 – –– – – – –118SB330-2.5 2) 532 460 310 133 214 75 198 138SB330-4 410 410 32045173 152 265SB330-6 540SB330-10 568SB330-13 660 570 420330 270SB330-20 89675229 180 317SB330-24 1062SB330-32 14111340 1190SB330-50 19311)without back plate and console, with a HyRac clamp 110-118/124 H10 ST2)without console, with back plate and two HyRac clamps 110-110/124 H10 STSAF seriesNominal sizeSB330 [l]1PISO 228Connection forpressure gaugeJ[mm]142SAF10 2.5 ... 6 G 1/2 2 x G 1/4143≥ 10 1471173SAF20 2.5 ... 6 G 1174G 1/4, G 1/2≥ 10 178SAF32 ≥ 1 G 1 1/2 2036. NOTEThe information in this brochure relates tothe operating conditions and applicationsdescribed. For applications and operatingconditions not described, please contactthe relevant technical department.Subject to technical modifications.E 3.503.3/03.12146HYDAC Technology GmbHIndustriegebiet66280 Sulzbach/Saar, GermanyTel.: +49 (0) 68 97 / 509 - 01Fax: +49 (0) 68 97 / 509 - 464Internet: www.hydac.comE-Mail: speichertechnik@hydac.com

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Broch.: Cooling Systems DEF 5.700 Brochure: Electronics DEF 18.000 Brochure: Accessories DEF 6.100 Broch.: Compact Hydraulics DEF 5.300 Brochure: Fluid Service DEF 7.929 Broch.: Filters for Ind. Processing DEF 7.700 Brochure: Filter Range E 70.000 Br.: Accumulators DEF 3.000Global presence.Local expertise.www.hydac.comHYDAC HeadquartersHYDAC CompaniesHYDAC Distributors and Service PartnersHYDAC TECHNOLOGYGMBHIndustriegebiet66280 Sulzbach/SaarGermanyPhone:+49 (0) 6897 509-01Fax:+49 (0) 6897 509-464Internet: www.hydac.comE-Mail: speichertechnik@hydac.comE 30.000.1/03.12