Foreline traps Foreline traps

Section 3.1Foreline trapsMolecular sieveRoughing componentsRoughing componentsSection 3.1Foreline trapsMolecular sieveUHV and HV seriesCFCF PortsØ TubeATypTrap Tube Body Body Overall Wtsize Flange dia. dia. height height A B kg100 DN16CF 19.1 114 133 162 127 43 1.8100 DN40CF 38.1 114 200 229 119 51 2.5ReferenceE-MST-075-2E-MST-150-2Partnumber431035431040£228246€342369BRotatableflangeSieve materialHeater elementFixedflangeBodyheightOverallheightISO KFFeaturesnnnnnEffectively blocks backstreaming by absorbinghydrocarbonsTraps water vapourRegeneration using built-in heater304 stainless steel trap bodyAvailable in four sizesDescriptionMolecular sieve traps containing type 13X synthetic zeoliteeffectively prevent oil backstreaming at room temperature.They also trap water vapour in the sieve charge. The sievecharge can be reactivated by baking out in place when thebase vacuum cannot be achieved. A valve should be used toisolate evolved gas from the system during bakeout cycle.During bakeout the mechanical pump removes the evolvedgas from the sieve trapping material. Normal bakeout canbe accomplished by use of a timer during system off hours.Any oils trapped by the sieve material cannot be removedby baking. Periodic replacement is required whenever thesieve material exhibits evidence of hydrocarbon loading asdetermined by empirical observation. Sieve trappingmaterial can be replaced through port on top of trap. Trapscan be mounted in the standard vertical or horizontalposition.The heater reaches and maintains a self-regulated constant150°C temperature. Bakeout time depends on the amountof water vapour loading of the zeolite, within the range offour to 12 hours.ISO KF and LF portsKF 19.1 to 50.8 tube diameterLF 76.2 tube diameterØ TubeHose connectionØ TubeGround lugATypATypØ BodyØ BodyBFiller plugBBodyheightBodyheightOverallheightOverallheightHose connectionAccessoriesTrap Tube Body Body Overall Wtsize Flange dia. dia. height height A B kg100 DN16KF 19.1 114 133 162 127 43 1.8100 DN25KF 25.4 114 133 162 118 43 2.3100 DN40KF 38.1 114 200 229 119 51 2.5100 DN50KF 50.8 114 200 229 119 51 2.7Trap Body Body Overall Wtsize dia. height height A B kg100 114 133 162 114 43 1.8100 114 133 162 114 43 2.3100 114 200 229 114 51 2.5100 114 200 229 114 51 2.7WtDescriptionkgMolecular sieve replacement charge, type 13x, 0.5-0.2 kg 0.7Replacement heater assembly, 220-240V AC 0.1ReferenceE-KMST-075-2E-KMST-100-2E-KMST-150-2E-KMST-200-2ReferenceE-MST-075E-MST-100E-MST-150E-MST-200ReferenceMST-CE-MST-HPartnumber431036431038431041431045Partnumber431034431037431039431044Partnumber431013431046Gas handling loadNumberMechanical Recommended (50% relative Capacity Trap reference chargespump size trap tube size humidity) gm number required£245255260275£218206227250£2538€368371390413€327327341375€3857Up to 15 m 3 /hr 19 & 25 1.7m 3 500 E-MST-075 & -100 1Ø Body15 to 27 m 3 /hr 38 3.5m 3 726 E-MST-150 227 to 51 m 3 /hr 50 3.5m 3 726 E-MST-200 2All dimensions are nominal in millimetres unless specified Weights given are approximateAll dimensions are nominal in millimetres unless specified Weights given are approximate184MDC Vacuum Limited Telephone +44 (0)1825 280 450 www.mdcvacuum.co.ukMDC Vacuum Limited Telephone +44 (0)1825 280 450 www.mdcvacuum.co.uk185