Centrifugal Pump

Definition - What does Centrifugal Pump mean?

Centrifugal Pump is a pump which is used to induce flow by raising the pressure of a fluid. It is also known as a kinetic energy pump. In a Centrifugal Pump, the fluid enters through the casing of the pump axially, hits the impeller blades and is displaced tangentially and radially outward. It then exits through the impeller’s circumferential parts into the casing’s diffuser part. In this movement process, the fluid gains the momentum, velocity & pressure.

Petropedia explains Centrifugal Pump

A Centrifugal Pump is widely used in the industry because it has a simple design, very high efficiency, wide range of pump capacity and head. These pumps are easy to operate and maintain and have a smooth flow rate.

The design of a Centrifugal Pump depends on the following:

  • Number of suctions (could be single suction or double suction)
  • Number of impellers (single stage, two stage or multistage)
  • Output
  • Impellers type, number of vanes/volutes, etc.

There are three types of centrifugal pumps:

  • Single Stage Pump – Such pumps are used when low head is required and they generally have one impeller only. Their cost is low.
  • Two Stage Pump – Such pumps have two impellers arranged in series and are used where medium head is required.
  • Multistage Pump – Such pumps have three or more than three impellers arranged in series. They are used when high head service is required.
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