Triplex vs. Centrifugal Pumps for Boiler Feed Applications

1. Working Principle

Triplex pumps are positive displacement reciprocating pumps that rely on the reciprocating motion of plungers within the cylinder to change the working chamber volume, completing suction and discharge. The output pressure is stable and almost unaffected by flow variations. Centrifugal pumps, on the other hand, rely on the centrifugal force generated by the rotation of the impeller to transfer energy to the water, allowing flexible adjustment of output parameters by changing the outlet valve opening.

3. Application

For medium-to-small high pressure boilers, or boiler feed systems with high pressure stability requirements, triplex pumps are more suitable. For large-capacity, medium-to-low pressure boiler feed applications, centrifugal pumps offer lower operating costs and better user experience.