Thermostatic Wafer Traps - Armstrong International, Inc.

Thermostatic Wafer TrapsFor pressures to 600 psig...start up capacities to 1,600 lbs/hrArmstrong offers four thermostaticwafer steam traps. The WMT-1 isa stainless steel subcooling trap forinstrument tracer line service. Choiceof NPT or BSPT screwed connections.CapacitiesTable 30-1. Series WT TrapsDifferentialPressure,*psi5102030405075100150200250300350400500600Model No.WMT-1 WT-1 WT-2000 WT-3The WT-1 is ideal for low-capacitysteam tracers and features anexclusive non-welded wafer designand internal strainer screen two tothree times larger than that of otherStart UpCold Water70˚ Flbs/hr1202503203904204905706507009001,0001,0501,1501,3001,5001,600Start UpCold Water212˚ Flbs/hr1001702503003504004805807008009501,0251,2001,2501,4001,550*Capacities based on differential pressure with no back pressure.**Capacities will vary with the degree of subcooling. When greater capacities are required,the trap will automatically adjust to the load, up to the maximum (cold water) capacity shown,by increasing the amount of subcooling.OperatingCondensate50° F BelowSat.**lbs/hr10131820242630354046505663707785thermostatic traps. Choice of NPTor BSPT screwed connections.The WT-2000 does not have astrainer but is equipped with aspecial connector to expand pipingoptions and simplify installation.Choice of NPT or BSPT screwedconnections, or socketweld connections.Also available with optionalintegral strainer (IS connector).Armstrong’s WT-3 is a carbon steelthermostatic wafer trap for superheateddrip service. It features anexclusive non-welded wafer designwhich eliminates problems associatedwith weld stress. The WT-3 has nothin-walled enclosures such as bellowsor welded diaphragms and is alsoresistant to water hammer. Choiceof NPT or BSPT screwed connections,or socketweld connections.NOTE: Since the normal operation of all suppressedtemperature-discharge (subcooling)steam traps is to back up condensate, theyshould not be used on drip legs for saturatedsteam service, heating or process equipment.Exercise care in the maintenance of anythermostatic wafer trap with a small dischargearea susceptible to clogging.List of MaterialsTable 30-2. Series WT TrapsName of Part WMT-1 WT-1 WT-2000 WT-3Body 304 Stainless Steel 304 Stainless Steel 304 Stainless Steel Carbon Steel, C-1018Cap 304 Stainless Steel 304 Stainless Steel 304 Stainless Steel Carbon Steel, C-1018Connections 304 Stainless Steel 304 Stainless SteelStrainer Screen —Gasket —Capsule:.027" PerforatedStainless SteelStainless SteelClad Non-asbestosStainless SteelClad Non-asbestos— —.027" perforated—Stainless SteelStainless SteelClad Non-asbestosWafer Hastelloy Hastelloy Hastelloy HastelloyBody 304 Stainless Steel 303 Stainless Steel 303 Stainless Steel 303 Stainless SteelCap 304 Stainless Steel 303 Stainless Steel 303 Stainless Steel 303 Stainless SteelConnector — — 304 Stainless Steel —Connector Gasket — —Spiral Wound Stainless SteelNon-asbestos—Retaining Ring — — Zinc Plated Carbon Steel —Connector Flange — — Nickel Plated Carbon Steel —Flange Retainer — — 304 Stainless Steel —30

Thermostatic TrapsPhysical DataTable 31-1. Series WT TrapsModel No. WMT-1 WT-1WT-2000 WT-3Pipe Connections1 /4", 3 /8" 1 /2" 1 /2" 3 /4" 1 /2", 3 /4" 1 /2", 3 /4"“A” (Diameter) (in)2 1 /42 1 /4 2 1 /4 2 1 /4 2 1 /4 2 1 /4“B” (Height) (in)3 5 /16 3 5 /16 4 1 /2 4 11 /16 5 1 /4 4 5 /8“C” (Face to Face) (in)————2 3 /8—“D” (Bottom to C) L (in)Weight (lbs)—5 oz.—7 oz.—1—1 1 /413 1 /4—3Maximum Allowable Pressure(Vessel Design)Maximum Operating Pressure (psi)250 psig@ 400˚F250250 psig@ 400˚F250400 psig@ 650˚F400400 psig@ 650˚F400400 psig@ 650˚F400600 psig@ 750˚F600ABBBBDAFigure 31-1.Model WMT-1 TrapAFigure 31-2.Model WT-1 TrapCFigure 31-3.Model WT-2000 TrapAFigure 31-4.Model WT-3 TrapAll dimensions and weights are approximate. Use certified print for exact dimensions.31