Centrifugal pumps are used to induce flow or raise a liquid from a low level to a high level. These pumps work on a very simple mechanism. A centrifugal pump converts rotational energy, often from a motor, to energy in a moving fluid.

Pumps can be classified by their method of displacement into positive displacementpumps, impulse pumps, velocity pumps, gravity pumps, steam pumps and valveless pumps. There are two basic types of pumps: positive displacement and centrifugal.

Centrifugal pumps work by converting a rotational energy from a motor to induce a flow or raise the pressure of liquid. When a fluid enters from the suction end of the pump, the impeller catches the fluids and then rotates, making the fluid entering the pump rotate as well.