A progressive cavity pump is a type of positive displacement pump that can be applied to some of the hardest pumping and most difficult fluid applications. Although it is a flexible pump that can accommodate a wide range of applications, it is perfectly built for fluid metering and pumping of viscous, abrasive or shear-sensitive materials.

Other terminology for radical cavity pumps include: advanced cavity pumps, PC pumps, cavity pumps and progg cavity pumps.

How is a progressive cavity pump working?

As all positive displacement pumps, a PC pump is a flow-creating system. They transfer fluid at the same level, regardless of the pressure at the inlet end.

PC pumps pull fluid in through a suction inlet that feeds into an elongated housing. There is a helical rotor and a stator assembly within the housing. The rotor helix is compensated by the stator. As the rotor turns and contacts the surface of the stator, a series of small cavities are formed. The fluid “progresses” through these cavities until it is drained through the outlet.

PC pumps are not permitted to run dry. The heat generated by the rotor and the stator can cause a failure of the pump. Many PC pumps have accessory options to defend against this.

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