Safety valves according to API standard type 526 - Leser.ru

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GeneralGeneral InformationLESER – API Safety ValvesThe API product group represents3 Full range of spring loaded safety valves acc. to API 5263 State-of-the-art design from the safety valve specialist3 Competitive solutions for the API marketLESER´s API safety valves• Are designed to meet all applications which require API.• Open rapidly with an overpressure of max. 10 % to the fulldesign lift.• Have a maximum blowdown of 7 % for steam/gasservice and 20% for liquid service.• Are developed in a close cooperation with plant engineersand service specialists.• Serve for protection of processes and equipment.• Are approved by all important approval organisationsworldwide which ensures the worldwide applicability e.g.:• European Community: CE-marking acc. to PressureEquipment Directive (PED) 97 / 23 / EC and EN ISO 4126-1• USA: UV-stamp acc. to ASME Section VIII Division 1,National Board certified capacities• Germany: VdTÜV approval acc. to PED, EN ISO 4126-1,TÜV SV 100 and AD 2000-Merkblatt A2• Canada: Canadian Registration Number acc. to therequirements of particular provinces• China: AQSIQ based on the approval acc. to ASMESection VIII Division 1 and AD 2000-Merkblatt A2Furthermore, all LESER API safety valves are designed, marked,produced and approved acc. to the requirements of thefollowing regulations (directives, codes, rules and standards).EN ISO 4126-7, EN 12266-1/-2, EN 1092 Part I and II flangingASME PTC 25, ASME-Code Sec. II, ASME B 16.34 and ASMEB16.5- flanging, API Std. 527, API RP 576AD 2000-Merkblatt A4, AD 2000-Merkblatt HP0, TRD 110,TRD 421, TRD 72100/01
General InformationGeneralApplicationsGeneral Design FeaturesLESER – API Safety Valvesoffer ultimate protection against overpressuresin all applications for steam, gases and liquids.LESER´s API Safety Valvescover a large variety of types, materials andoptions to fit any application:LESER´s API Series 526Safety valves present the simple safe solutionfor heavy duty applications, such as crude oilextraction, transportation and processing in• Refineries• Chemical industry• Petrochemical industry• Oil and gas – Onshore and Offshore• Vessels and piping systems• Blow-down systems• Storage tank farms• Design fully in accordance with API 526for easy interchangeability• Complete API 526 range: valve sizes 1" through 8",orifice D through T• Materials: WCB, WCC, CF8M, WC6, LCB, LCC, and a widerange of special materials to fulfill the requirements of criticalapplications• Special B 3 design for high back pressure applications andmaterial requirements far beyond API Standard• Fool proof design with fewer parts for built-in safety• Integral cast support brackets for easy handlingand safe installation• Open or closed bonnet, packed or plain lifting leveror gastight cap• Flanged connections according ASME and DIN guaranteea worldwide applicability• One design and spring (single trim) for steam, gas and liquidapplications reduces the number of spare parts and ensureslow cost maintenance management.• One-piece spindle reduces friction which leadsto high operation accuracy• Self-draining body design, avoids residuesand reduces corrosion• Horizontal installationLESER´s API Safety Valvescan be customized with a great variety of options, e.g.:• Special connections specified by the customerfor optimised adaptation to the plant.• Stellited or hardened metal sealing for longer product life• Soft seat solutions for superior tightness• Balanced bellows for back pressure compensation• Heating jackets for applications with high viscosity fluids• Any and every part can be produced in special materialexactly to meet customer specification requirements00/02
Page 2 and 3: NH 3HCLProduct RangeLESER Safety Va
Page 6 and 7: GeneralValve finderHow to find the
Page 8 and 9: GeneralHow to useGeneral signs and
Page 10 and 11: GeneralHow to useSample Capacity sh
Page 12 and 13: GeneralLEOS/GThis table is based on
Page 14 and 15: GeneralSour gas service (H 2 S)Norm
Page 16 and 17: Type 526Conventional designType 526
Page 18 and 19: Type 526Balanced bellows designType
Page 21 and 22: Type 5264 5 6Options Documentation
Page 23 and 24: Type 526Article numbers - OverviewA
Page 25 and 26: d 0 = Actual orifice diameterA 0 =
Page 27 and 28: d 0 = Actual orifice diameterA 0 =
Page 29 and 30: Type 526WeightsUS UnitsBonnetLiftin
Page 31 and 32: Type 526Orifice DArticle numbers, d
Page 33 and 34: Type 526Pressure temperature rating
Page 35 and 36: Type 526Orifice EArticle numbers, d
Page 39 and 40: Type 526Orifice FArticle numbers, d
Page 43 and 44: Type 526Orifice GArticle numbers, d
Page 47 and 48: Type 526Orifice HArticle numbers, d
Page 51 and 52: Type 526Orifice JArticle numbers, d
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Type 526Orifice KArticle numbers, d
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Type 526Pressure temperature rating
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Type 526Orifice LArticle numbers, d
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Type 526Orifice MArticle numbers, d
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Type 526Orifice NArticle numbers, d
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Type 526Orifice PArticle numbers, d
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Type 526Orifice QArticle numbers, d
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Type 526Orifice RArticle numbers, d
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Type 526Orifice TArticle numbers, d
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Type 526Flange drillingsFlange dril
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Orifice900 x 300 1500 x 300 2500 x
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Type 526Spare parts - ComponentsIte
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Type 526Spare parts - Disc (Item 7)
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Type 526Spare parts - Nozzle (Item
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Type 526Spare parts - Balanced bell
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Type 526Spare parts - Gasket Body /
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Type 526ApprovalsApprovalsOrifice D
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Type 526Capacities - SteamCapacitie
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Type 526Capacities - AirCapacities
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Type 526Capacities - WaterCapacitie
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Accessoriesand OptionsContentsChapt
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Accessories and OptionsCaps and lev
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Accessories and OptionsCaps and lev
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Accessories and OptionsMetal seat -
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Accessories and OptionsSoft seal di
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Accessories and OptionsSoft seal se
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Accessories and OptionsBalanced bel
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Accessories and OptionsHigh tempera
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Accessories and OptionsLift indicat
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Accessories and OptionsHeating jack
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Safety valves according to API standard type 526 - Leser.ru

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