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Pump Types
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Positive Displacement pumps (PDP) force the fluid along by volume changes.
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Reciprocating: piston, plungers, diaphragm
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Rotary: screw, gear, lobe, circumferential piston
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Dynamic Pumps add momentum to the fluid by means of fast-moving blades or
vanes. There is no closed volume so they provide a much steadier discharge.
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Rotary: centrifugal or radial, axial, mixed flow
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Special Designs: jet pump, electromagnetic pumps
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