What is difference between centrifugal and positive displacement pumps

Question

Accepted Answer

Centrifugal pumps use centrifugal force to move fluid, while positive displacement pumps use mechanical action to displace fluid.

Centrifugal pumps use an impeller to create centrifugal force, which pushes the fluid outward.
Positive displacement pumps use rotating or reciprocating mechanisms to displace fluid.
Centrifugal pumps are typically used for high flow rates and low-pressure applications.
Positive displacement pumps are better suited for high-pressure applications and handling viscous fluids.
Examples of centrifugal pumps include water pumps and sewage pumps.
Examples of positive displacement pumps include piston pumps and gear pumps.

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