Piston Pumps and Plunger Pumps Selection Guide: Types ...
2020-8-15u2002·u2002Operation . Piston pumps and plunger pumps are positive displacement pumps, meaning they use contracting and expanding cavities to move fluids.Specifically, they are reciprocating pumps, which have cavities that expand and contract in a reciprocating (back and forth; up and down) motion rather than a circular (rotary) motion.For more information about this category of pumps, visit the …
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