What is a multistage pump?
Multistage pumps are centrifugal pumps in which the fluid flows through several impellers fitted in series. This is as opposed to a single stage pump which only has one impeller. The more stages the pump has, the higher the final discharge pressure.
Multistage chemical pumps are unique in that they are able to produce increasingly higher pressures with the addition of every stage while the flow range always remains constant for a given rpm. Read More about Multistage Chemical Pumps 101 »