A typical centrifugal pump has a relatively
low number of moving parts and can be easily adapted
to a variety of prime movers. These prime movers include AC
and DC electric motors, diesel
engines, steam turbines, and air motors. Centrifugal pumps
are typically small in size and can
usually be built for a relatively low cost. In addition,
centrifugal pumps provide a high volumetric
flow rate with a relatively low pressure.
In order to increase the volumetric flow rate
in a system or to compensate for large flow resistances,
centrifugal pumps are often used in parallel or in series.
Figure 11 depicts two identical
centrifugal pumps operating at the same speed in parallel.
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