PMP Series Pressure Motive Pumps
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Hot Condensate The mechanical seals in standard electric condensate return pumps begin to have difficulty when handling condensate in excess of 195° F. Seal failure is virtually guaranteed when condensate temperatures reach 203°
F due to flashing of the condensate across the seal face. It is therefore required to cool condensate in order to prevent seal failure prior to pumping using electric pumps. PMPs do not have seals and therefore will handle condensate well in excess of these temperatures.
Several choices of pump body materials, types and configurations are available to meet specific customer applications:
Ductile Iron Tanks Ductile Iron is far superior to cast iron in handling higher pressures and temperatures. Ductile iron is
also extremely corrosive resistant to condensate and water and can last in excess of 50 years before tank replacement is required. Our ductile iron tanks can be ASME coded on request.
Fabricated Carbon Steel Carbon steel has a higher pressure and temperature rating than ductile iron. Certain industrial facilities such as chemical and petrochemical refineries request carbon steel only. Our carbon steel tanks come standard ASME coded.
Fabricated Stainless Steel Stainless steel (304L) tanks are the most corrosive resistant and can be used in extremely harsh environments.
Low Profile Low profile tanks are often required when draining condensate from process equipment when positioned close to the ground which limits filling head. Low profile units are available in both fabricated steel and cast iron.
Sump Drainers Sump drainers are similar to the standard PMP models except that they discharge the condensate vertically upwards. This piping configuration allows them to be easily fit into below ground sump pits with limited space.
High Pressure Standard units have a maximum discharge pressure of 150 PSIG. High pressure (PMPHP) units can discharge condensate up to 200 PSIG and are used for returning condensate against systems with high back pressure.