Foreline traps Foreline traps

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Section 3.1Foreline trapsCoaxial with replaceable filterRoughing componentsRoughing componentsSection 3.1Foreline trapsCoaxial with replaceable filterUHV and HV seriesCFFeaturesnnnnnnSignificantly reduces oil backstreamingTwo-piece clamped body design for easy element replacementChoice of copper, stainless steel, bronze, activated alumina andactivated carbon filter elements50mm to 200mm body diameters304 stainless steel trap bodyViton ® O-ring body sealTrap Tube Body Body Overall Clamp Wtsize Flange dia. dia. height height 00 kg50 DN16CF 19.1 51 135 237 115 0.9100 DN40CF 38.1 102 135 222 137 2.3150 DN63CF 114.3 150 180 275 184 7ReferenceDFT-2075-2DFT-4150-2DFT-6250-2Partnumber433002433014433026£143215351€215299526Fixed flangeISO KF and ISO LFDescriptionIn contrast to the single-piece units on the previous twopages, the two-piece coaxial foreline traps offer a widerselection of filter element materials. Filter elements for atwo-piece trap are removable stainless steel screencartridges filled with copper, stainless steel or bronzewools, activated alumina, activated carbon or dual elementabsorbent material.During operation, pump oil coalesces on the element andreturns to the pump. Activated alumina effectively adsorbsacids and water vapour, while activated carbon adsorbsorganics and water vapour. Filter cartridges are quickly andeasily replaced by removing the banded clamp that fastensthe two-piece body. MDC Vacuum recommends keeping aspare element on-hand for a quick change to minimizedown time. Re-usable elements may be cleaned and readyfor the next exchange.CF PortsBodyheightØ TubeRotatableflangeBodyheightØ TubeØ BodyØ ClampØ ClampOverallheightOverallheightHose connectionTrap Tube Body Body Overall Clamp Wtsize Flange dia. dia. height height 00 kg50 DN16KF 19.1 51 135 237 115 0.950 DN25KF 25.4 51 135 220 115 0.9100 DN16KF 19.1 102 135 237 137 2.3100 DN25KF 25.4 102 135 220 137 2.3100 DN40KF 38.1 102 135 222 137 2.3100 DN50KF 50.8 102 135 223 137 2.3150 DN40KF 38.1 153 180 266 184 6.8150 DN50KF 50.8 153 180 267 184 6.8150 DN63LF 63.5 153 180 269 184 6.8200 DN63LF 63.5 203 256 345 243 11.4200 DN100LF 101.6 203 256 345 243 11.4200 DN160LF 152.4 203 256 345 243 11.4Trap Tube Body Body Overall Clamp Wtsize dia. dia. height height 00 kg50 19.1 51 135 210 115 0.9100 38.1 102 135 210 137 2.3ReferenceKDFT-2075-2KDFT-2100-2KDFT-4075-2KDFT-4100-2KDFT-4150-2KDFT-4200-2KDFT-6150-2KDFT-6200-2LDFT-6250-2LDFT-8250-2LDFT-8400-2LDFT-8600-2ReferenceDFT-2075DFT-4150Partnumber433003433006433009433012433015433018433021433024433027433033433039433042Partnumber433001433013£143148182191201210267276337585627703£126179€2082152542662792933713844758789411055€189260Two-piece traps are offered with 50, 100, 150 and 200mmbody diameters. All coaxial trap bodies are made of type304 stainless steel and are offered with a choice of hose orflange style connections. CF metal seal flange connectionshave one fixed and one rotatable flange for alignmentpurposes. ISOKF and ISOLF flanges are clamp-style. Hoseconnections may also be welded, but permanent installationmust be carefully evaluated. Contaminated traps may becleaned with a solvent and allowed to dry before replacinginto service. Filter elements are not included with trapassemblies; they must be ordered separately from thetables on page 191.ISO and KF portsBodyheightØ TubeØ BodyØ ClampOverallheightHose connectionØ BodyAll dimensions are nominal in millimetres unless specifiedAll dimensions are nominal in millimetres unless specified Weights given are approximate188MDC Vacuum Limited Telephone +44 (0)1825 280 450 www.mdcvacuum.co.ukMDC Vacuum Limited Telephone +44 (0)1825 280 450 www.mdcvacuum.co.uk189
Section 3.1Foreline trapsFilter elementsRoughing componentsRoughing componentsSection 3.1Foreline trapsFilter elementsFilters for two-piece coaxial trapsFeaturesnnnEasy exchange of cartridgesMetal sieve units are reusableUse with two-piece coaxial trap bodiesDescriptionTwo-piece coaxial foreline traps offer a wide selection ofreplaceable filter element materials. Filter elements for a twopiecetrap are removable stainless steel screen cartridges filledwith copper, stainless steel or bronze wools, activated alumina,activated carbon or dual element absorbent material.Metal wool filter elements are used primarily for the trappingof pump oil backstreaming through a vacuum system. Duringpump operation, oil coalesces on the metal wool element anddrains back to the vacuum pump. Activated alumina effectivelyadsorbs both acids and water vapour while activated carbonadsorbs organics and water vapour. The selection chart at thebottom of the facing page will help in choosing a filter elementfor your specific application.Filter cartridges are quickly and easily replaced by removing thebanded clamp that fastens a two-piece coaxial trap body. Tominimize down time, MDC Vacuum recommends keeping sparefilter elements on-hand for quick replacement. Re-usableelements may be cleaned and stored for the next exchange.With the exception of the activated carbon and dual elementfilters, all others are re-usable. Filter elements are not includedwith trap assemblies and must be ordered separately using thepart numbers detailed on the next page. Filters for 50, 100, 150and 200mm body diameters are included. Contaminatedelements may be cleaned with a solvent and allowed to drybefore re-using.CopperBronzeActivatedcarbonStainless steelActivatedaluminaDual elementFilter element selection tableUse with 50mm body trapsCopper sieve elementStainless steel sieve elementBronze sieve elementActivated alumina cartridge 2Activated carbon cartridge 2Use with 100mm body trapsCopper sieve elementStainless steel sieve elementBronze sieve elementActivated alumina cartridge 2Activated carbon cartridge 2Dual element ac/fg 1,2Use with 150mm body trapsCopper sieve elementStainless steel sieve elementBronze sieve elementActivated alumina cartridge 2Activated carbon cartridge 2Dual element ac/fg 1,2Use with 200mm body trapsCopper sieve elementStainless steel sieve elementBronze sieve elementActivated alumina cartridge 2Activated carbon cartridge 21Activated carbon and fibreglass2Requires initial pump-downStainlesssteel Copper BronzeActivatedaluminaReferenceDFT-2F-CUDFT-2F-SSDFT-2F-BRDFT-2F-AADFT-2F-ACDFT-4F-CUDFT-4F-SSDFT-4F-BRDFT-4F-AADFT-4F-ACDFT-4F-DEDFT-6F-CUDFT-6F-SSDFT-6F-BRDFT-6F-AADFT-6F-ACDFT-6F-DEDFT-8F-CUDFT-8F-SSDFT-8F-BRDFT-8F-AADFT-8F-ACActivatedcarbonPrevent oil back-streaming ••• ••• ••• • • •••Trap water vapour •• ••Trap organics ••• •••Trap acid vapours•••DualelementPartnumber433050433051433052433053433054433055433056433057433058433059433060433061433062433063433064433065433066433067433068433069433070433071£20182321383027322744130515459558015410293121109125Effective rating••• Very good•• Good• Fair€3030323257404045406618876818882120215143139169164181This table is offered as a general guideline for filter selectionAll dimensions are nominal in millimetres unless specifiedAll dimensions are nominal in millimetres unless specified190MDC Vacuum Limited Telephone +44 (0)1825 280 450 www.mdcvacuum.co.ukMDC Vacuum Limited Telephone +44 (0)1825 280 450 www.mdcvacuum.co.uk191
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