Centrifugal Pumps Definition

Glossary : Centrifugal Pumps:

A non-positive displacement type of pump that uses an impeller spinning on a shaft.  The impeller takes in fluid through an opening located centrally about the axis of rotation then expels it through vanes along its outer diameter.  The impeller can either be open or closed vane by design.  Impellers are used in series to increase pressure and used in parallel to increase flow.