Multistage Pumps
Parts of a Multistage Pump:
The components of a multistage pump are similar to those of a standard centrifugal pump, with the addition
of diffusers in multistage centrifugal pumps. These diffusers efficiently channel the fluid into the
impeller's eye or to the following stage. Side channel pumps feature intermediate plates with scalloped side
channels and liquid parts.
How a Multistage Pump Works:
A multistage pump operates by having one impeller feed into the next impeller. The number of impellers
required depends on the discharge pressure requirement. Liquid enters the pump and passes through the
various impellers in a sequence from left to right.
Applications and Uses of Multistage Pumps:
Multistage pumps find numerous applications in delivering water to high-rise buildings, reverse osmosis
(RO), boiler feed water, spraying, high-pressure cleaning, water works, heating, condensate, fuel delivery,
oil and gas production, power generation, mining, and other high-pressure and temperature applications.
Different Types of Multistage Pumps:
There are various types of multistage pumps available, including horizontal multistage centrifugal pumps
(above ground), vertical multistage centrifugal pumps (above ground), submersible/sump pump types, side
channel pumps, combination pumps (e.g., centrifugal low NPSH first stage with side channel additional
stage), horizontal split case pumps, vertical turbine pumps, and sanitary multistage pumps.
