STEAM TRAPS Introduction Steam Trap Selection Guidelines • DRIP Applications
Thermodynamic
The Thermodynamic Disc (TD) Steam Trap is simple and compact and one of the primary choices for drip applications over 30 psig. The TD600 Series with its integral one piece body-seat design, are the most economical and commonly used for pressures up to 600 psig. The 1/2" & 3/4" TD600 L will meet the capacity needs of most drip applications ("S" models have integral strainers). The TD600 Series cannot be welded in-line. The TD700S & TD900S Series are both in-line repairable and can be welded into the pipeline.
TD600L
TD600LS .
TD700S
TD900S
Fully In-line Repairable
Float & Thermostatic
The Float & Thermostatic (F&T) Steam Trap is the primary choice for process applications. However, for drip applications, they can be effectively used for pressures up to 125 psig on the WFT Series & 225 psig on the FTT Series; for higher pressures, the larger body sizes required make F&T traps a less economical and desireable solution for drip service. The 3/4" WFT-125, or 1/2" & 3/4" FTT-225 will meet the capacity needs of most drip applications. Other PMO (maximum operating pressure) ranges available. For drip applications, select a PMO that meets or exceeds the maximum pressure in the main steam distribution piping.
FTT
WFT
Parallel Pipe Connection
In-line Pipe Connection
Thermostatic
Thermostatic Steam Traps are extremely versatile and can be used on a wide variety of applications from general service drips to small-to-medium batch type processes. Using a welded stainless steel thermal elements to control condensate discharge, these traps discharge subcool condensate, making them extremely energy efficient. As a result, the condensate discharged generates less flash steam which reduces back pressure build-up in condensate return lines. A single model will operate from 0 to 650 psig which simplifies selection. The WT2001, with stainless steel body and non-repairable design, is the most commonly used. The WT3001 and WT2501 have the same internals as the WT2001, however, their 4-bolt cover allows them to be in-line repairable. The WT3001 has a stainless steel body while the WT2501 is cast iron. The WPN Series (not shown), uses a bi-metal element suitable for pressures to 2,260 psig, and will handle superheated steam.
WT2501
WT2001
Repairable (Cast Iron)
Non-Repairable (Stainless Steel)
Inverted Bucket (IB)
Universal Quick-Change
The all stainless steel universal style steam traps feature a permanent installation of the universal
Inverted Bucket Traps are extremely rugged and have a discharge orifice mounted at the top of the trap body, making them less susceptible to failure from dirt and debris when compared to other trap types. The IB models selected are suitable choice for most drip applications.
connector with a 2-bolt mounting arrangement for the universal steam trap module, allowing the steam trap to be removed and replaced in minutes. These Quick-Change Steam Traps should be considered for all drip applications. • Thermodynamic • Float & Thermostatic • Thermostatic • Inverted Bucket
Stainless
Cast Iron
Steel
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