Pumps

Automobile

Heavy Duty V.

Pump

Tractor

Battery

Water Pump

1. Dynamic pumps, LIKE Vertical & Horizontal Centrifugal, submersible, and fire hydrant Pumps
2. Positive displacement pumps like Diaphragm, Gear, Peristaltic, Lobe, and Piston.

The dynamic pump is a type of velocity pump in which kinetic energy is added to the fluid by increasing the flow velocity. This increase in energy is converted to a gain in potential energy (pressure) when the velocity is reduced prior to or as the flow exits the pump into the discharge pipe.

The dynamic pump

A practical difference between dynamic and positive-displacement pumps is how they operate under closed valve conditions. Positive-displacement pumps physically displace fluid, so closing a valve downstream of a positive-displacement pump produces a continual pressure build-up that can cause mechanical failure of the pipeline or pump.

Dynamic pumps differ in that they can be safely operated under closed valve conditions (for short periods of time).