A multistage pump contains two or more impellers which may be of the same or different types i.e. low NPSH suction impeller, double suction impeller or combination with Centrifugal first stage and side channel stage impellers. A multistage pump operates by one impeller feeding into the next impeller and the number of impellers depend on the discharge pressure requirement. Liquid enters the pump and then passes through the variouos number of impellers in a sequence.

Types of multistage pumps include:

• Horizontal multistage centrifugal pump (above ground)

• Vertical multistage centrifugal pump (above ground)

• Submersible / Sump pump types

• Side Channel pump

• Combination pump

• Horizontal split case pump

• Vertical turbine pump

• Sanitary multistage pump

Typical Applications:

• Boiler feed duties in industrial power applications

• Condensate service in power stations and industrial plants

• Feed pumps in desalination by reverse osmosis

• High-pressure water in general industry

• Dewatering in underground mines