Flexible impeller

A flexible impeller pump is a positive-displacement pump that, by deforming impeller vanes, draws the liquid into the pump housing and moves it to the discharge port with a constant flow rate.

The flexibility of the vanes enables a tight seal to the internal housing, making the pump self-priming, while also permitting bi-directional operation.

In 1938, Arthur M. Briggs filed a patent for this type of pump.

[1] Particularly suitable for transfer of viscous, delicate, and slurry fluids even with high solid content.

Pump housing can be made of high grade stainless steel, bronze for marine applications, or other materials.