WT4000 Thermostatic Steam Trap

Brand: Watson McDaniel

The WT4000 is a high capacity version of the WT3000, for removing condensate and air from larger process applications. This steam trap is fully repairable while the body remains in-line.

Like all thermostatic traps, they are small, light weight, operate over a wide pressure range, and have excellent air handling capabilities. Discharging air at start-up allows steam to quickly enter the system.

All stainless steel construction and integral strainer option make the WT4000 an excellent choice for most process applications. Contains an extremely strong and rugged precision welded Stainless Steel thermal element which is highly resistant to waterhammer.
  • 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 psig: 300 (kPa: 2,068, bar: 20.68)
  • 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 waterhammer
  • 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


Enclosure, Body Material

  • AISI 316L Stainless Steel

NPT Connection

  • 1” NPT Female
  • 3/4” NPT Female

Welded Connection

  • 1” Socket Weld End Female
  • 3/4” Socket Weld End Female

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