Pump Classifications
1.) Type of Pumps :- Classified by operating principle
1.1 ) Positive Displacement Pumps
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Reciprocating pump
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Displacement by reciprocation of piston plunger
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Used only for viscous fluids and oil wells
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Rotary pump
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Displacement by rotary action of gear, cam or vanes
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Several sub-types
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Used for special services in industry
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For each pump revolution
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Fixed amount of liquid taken from one end
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Positively discharged at other end
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Used for pumping fluids other than water
1.2) Dynamic pumps
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Mode of operation
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Rotating impeller converts kinetic energy into pressure or velocity to pump the fluid
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Two types
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Centrifugal pumps: pumping water in industry – 75% of pumps installed
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Special effect pumps: specialized conditions
