PMPT Internal Steam Trap

Brand: Watson McDaniel

The PMPT low-profile pressure motive pump & trap combination has an internal steam trap for draining heat exchangers and other equipment whose steam pressure is modulated by a temperature regulator or a temperature control valve.

In these applications the steam pressure in the heat exchanger may not be sufficient to overcome the back pressure in the condensate return line.
  • Low-profile design allows for condensate drainage of equipment positioned close to the floor
  • Equipped with our proven, Patented “Snap-Assure” mechanism which extends the useful life of the pump
  • Internal mechanism can be removed from the top of the pump while pump remains piped in line
  • Mechanism incorporates heat-treated stainless steel wear items
  • Dual compression springs made from Inconel®-X-750 for high-temperature, corrosive service


Enclosure, Body Material

  • Ductile Iron (SA-395) - PMPT
  • Stainless Steel (CF3M) - PMPTS

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 150#

NPT Connection

  • 1” NPT
  • 1-1/2” NPT

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