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Glossary · Pumps & performance
Positive Displacement Pump
Pump type that creates work to increase fluid pressure by trapping a fixed volume of liquid in a chamber or cavity and then physically displacing it by mechanical means such as a piston, diaphragm, or gear in a repetitive cyclic process.
As the chamber decrease in size, the trapped liquid is forced out, generating flow and increasing its pressure to move toward the discharge.
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