WT4000 Repairable High Capacity Steam Traps

PROCESS: WT4000 Repairable High Capacity Steam Traps are used for industrial process applications. Their compact size, all stainless steel construction, excellent air handling capability and wide operating pressure range make them a great choice for most process applications. Thermostatic traps are far superior to bucket traps and thermodynamic disc traps in their ability to remove air from the system.

* WT4001 refer to 5/16″ orifice size, WT4003 refer to 7/16″ orifice size.

  • The thermal element and seat can be easily removed and replaced in minutes with the trap body still in-line
  • Operates at steam pressures up to 300 PSIG
  • Thermostatic traps are excellent at discharging air, which allows steam to enter quickly; extremely important during start-up
  • Welded stainless steel thermal element resists shock from water hammer
  • Freeze proof when the trap is installed in a vertical orientation allowing for complete condensate drainage
  • Body is produced from stainless steel investment casting
  • Hardened stainless steel seat for extended service life
  • Available with integral strainer and blowdown valve
  • 3/4″ or 1″ Models available
  • NPT, Socket Weld, 150# FLG, and 300# FLG Types available
  • 5/16″ and 7/16″ Orifice  sizes available
  • Optional strainer models available
  • 300 Max PMO (psig)

Catalog Spec Sheet



WT4000 Repairable High Capacity Steam Traps are extremely energy efficient and excellent at discharging air allowing steam to enter the system quickly during system startup. Models are available in Stainless and alloy steel for Drip, Tracing, and medium size Process applications. Pressures up to 650 psig.

  • Superior air venting capability and extremely energy efficient
  • Single model operates over the entire pressure range in contrast to (F&Ts & IBs)
  • Considerably Smaller in size than F&Ts & IB traps of similar capacities
  • Self-draining to prevent freezing (unlike F&Ts and IB traps)