Positive Displacement Pumps Have Rotors Spinning Within A...

Positive Displacement Pumps Have Rotors Spinning Within A Stator-Style Housing, Called Progressive Cavity Pump

Posted 2023-04-24 13:00:51

A very adaptable pump, the Progressing Cavity Pump can be employed in a wide range of pumping operations. In addition to providing all the benefits of a positive displacement pump, it is especially made to be abrasion resistant in demanding pumping situations. Positive displacement pumps include the progressive cavity pump. Compared to the more popular centrifugal pump, this is distinct. Where pumping water-like fluids with low viscosity and where a fixed flow and constant output pressure are the main requirements of the application, a centrifugal pump is an excellent, affordable option. In straightforward pumping applications, a properly implemented centrifugal pump will provide years of dependable service.

When a centrifugal pump is not appropriate for the pumping purpose, a Progressing Cavity Pump is employed. When the liquid has a higher viscosity—or thickness—than water, this is one of the most obvious indications that a progressive cavity pump should be used. When the viscosity of the liquid increases, centrifugal pumps become very mechanical and volumetrically inefficient, which causes the flow to decrease and the power consumption to rise. The opposite is true for progressive cavity pumps; as viscosity rises, mechanical efficiency and volumetric efficiency increase, resulting in reduced power requirements and increased flow.

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