Liquid pump

Gear pumps belong to the rotating positive displacement pumps.

In the positive displacement pump the movement of the fluid is forced by reducing the volume of the pump chamber.

The side channel pump is a special design of a centrifugal pump, which is often regarded as a mixture of centrifugal and positive displacement pump.

Screw pumps belong to the group of rotary positive displacement pumps.

Plunger pumps have a displacement body (plunger) which performs an axial movement in the pump working chamber.

Diaphragm pumps are usually regarded as a special type of reciprocating piston pumps.