The majority of process requirements may often be satisfied by a centrifugal pump in one of its various varieties and combinations. This covers common pumps as well as high-pressure and high-clean pumps. The types that are offered depend on the brand of pump.

Standard pump:

Usually with a maximum system pressure of 10 bar for the majority of applications (147 psi).
Usually available in a variety of sizes to handle a variety of tasks.

High-pressure pump:

For filter applications, for instance, with a typical maximum system pressure of about 40 bar (588 psi).
Usually designed with a hefty backplate and casing, an internal shaft seal, and specific motor (bearings) to handle high system/inlet pressures.

Multi-stage pumps:

They function as a series of connected pumps. Usually has a substantial casing/backplate design, internal shaft seal, and specific motor (bearings) to sustain high inlet/system pressures.
Usually a booster pump for high pressure at a relatively limited capacity.

A pump that functions as a liquid-ring pump for aerated fluids, such as CIP return, is a self-priming pump.

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