Multistage pumps have two or more impellers.

The impeller plays a crucial role in the operation of a centrifugal pump. It pressurizes and transfers the fluid/liquid. Since multistage pumps have more than one impeller, the flow rate and pressure ranges in a multistage are more efficient than single-stage pumps.

Inside a multistage pump, each impeller acts like a stand-alone single-stage centrifugal pump. Hence, it works like a chain of single-stage pumps connected linearly. As the liquid moves from one stage to the next, the pressure rises while the flow remains constant.

As a result, Multistage pumps are capable of providing a flexible range of flow and head and a relatively higher degree of energy efficiency, which makes them an excellent choice for many applications.