Progressive Cavity Pump

This is a still representation and possibly also a low-resolution image of a fully animated pump.

Progressive (or Progressing) Cavity pumps, a type of Single Screw pump, are used for highly viscous liquids such as peanut butter or glue, and also for liquids with significant amounts of solids such as cement or sand slurry.

Fluid proceeds from the entrance, at the top on the right side here, to the left. The rotor revolves inside the stator.

The stator is a twisted cavity with an oval-shaped cross-section. It is usually made of natural or synthetic rubber, steel, or plastic. The rotor is usually steel.

For a given diameter and shape of the rotor, doubling the number of stages (the length) will double the output pressure.

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