A centrifugal pump is a mechanical device which is designed to move fluid or water by means of the transfer of rotational energy from one or more impellers within the pump. The momentum of the impeller produces an increase in pressure or flow at the pumps discharge.
Centrifugal pumps are commonly used for pumping water and a wide range of "thin liquids" for applications in the industrial, agricultural and domestic applications for water transfer. Typically used to move water from one tank to another or one source to another where low pressure and high volume is required and are often called by the term water transfer pumps.
Centrifugal pumps are the most common pumps because they have a simple design that produces high efficiency and can tolerate high flow rates at low viscosity.
A centrifugal pump operates by fluid entering the rotating impeller and is pushed out by centrifugal force through the impellers vane tips. The action of the pumps impeller increases the fluids velocity and pressure and directs it towards the pump outlet. The casing of a centrifugal pump is designed to constrict the fluid from the pump inlet, direct it into the impeller and then slow and control the fluid before it is discharged at the outlet.