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What is a positive displacement pump?
A positive displacement pump causes a liquid or gas to move by trapping a fixed amount of fluid or gas and then forcing (displacing) that trapped volume into the discharge pipe.
Positive displacement pumps can be further classified as either rotary-type (for example the rotary vane) or lobe pumps similar to oil pumps used in car engines.
These pumps give a non-pulsating output or displacement unlike the reciprocating pumps.
Hence, they are called positive displacement pumps.
Positive displacement pumps can be further classified as either rotary-type (for example the rotary vane) or lobe pumps similar to oil pumps used in car engines.
These pumps give a non-pulsating output or displacement unlike the reciprocating pumps.
Hence, they are called positive displacement pumps.