Steam Condensate Pumping

Specification Checklist for Steam Condensate Units

  • Pump flow rate
    Typically 2 times the normal (not peak) condensate flow rate.

  • Total Dynamic Head (max.)
    Calculated when pumps are operating at the actual pump flow rate (which may be a bit higher than specified flow rate) and with worst case back pressure condition. Consider all other sources of condensate that may flow into condensate header.

  • TDH (Min)
    Specify so that in worst case the NPSHR (+3 ft. for centrifugal pumps) is still less than the NPSHA. Look at minimum back pressure in discharge line and highest liquid level on suction side.

  • Temperature
    Worst case, considering distance of condensate receiver from condensing source, and likelihood of steam trap failure.

  • Inlet height for condensate
    Specify the minimum for which the receiver must be designed.

  • Receiver size
    Consider one or two sizes larger. Allows for increase in capacity without insulation and piping changes.

  • Plot area
    What is maximum allowable?

  • Controls
    Specify NEMA designation. Does not necessarily have to be similar to motor designation.

  • Pump materials of construction
    What chemicals may be used in boiler treatment and condensate treatment system. Amines and sulfites are of particular importance. What about future?

  • Mechanical seals / Packing
    High performance seals used above 212F. Packing used where seal failure may cause problem.

  • Pump speed
    1750 RPM is desirable. Seal and bearing life much better than at 3500 RPM.

  • Pump type
    Regenerative turbine pump: non-cavitating, stable flow rate


See other pump products.