CAPACITY CALCULATIONS FOR STEAM LOADS

189 EngineeringSTEAM TRAP SIZING AND SELECTIONDrip Trap on STEAM Mains:Should be sized for 2X safety factor at full differential pressurePrimary choice for trap: 1/2 WD600L Thermodynamic3/4 WD600L ThermodynamicPlace trap every 200 ft. depending on type size, pressure,and piping Tracing:Typically a trap is placed approximately every 100 choice for trap: 1/2 WT2000 Thermostatic1/2 WT1000 ThermostaticBucket traps and thermodynamic traps are used on critical tracing applications where no condensate can Applications:2X safety factor based on differential pressureWhen used to drain a heat exchanger being supplied by a modulating control valve using less than 30 PSIG STEAM pressure, trap must handle full load at 1/2 PSI differential used to drain a heat exchanger being supplied by a modulating control valve using with STEAM pressuregreater than 30 PSIG use safety factor at fulI differential choice for trap.

190 Engineering Watson McDaniel reserves theright to change the designs and/or materials of its products without notice. ©2006 Watson McDaniel Company Watson McDaniel reserves the right to change the designs and/or materials of its products without notice

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