Positive Displacement Pumps have two main subtypes; one is Piston pump. What is the other subtype?

Positive Displacement Pumps have two main subtypes; one is Piston pump. What is the other subtype?

• A. Rotary pump
• B. Centrifugal pump
• C. Piston pump
• D. Gear pump

Answer: (A)

Positive displacement pumps come in two main families: reciprocating and rotary. A piston pump is an example of the reciprocating type, where a piston moves to trap a fixed amount of fluid and push it out with each stroke. The other main family is rotary pumps, which move fluid by the continuous rotation of gears, lobes, vanes, or screws, trapping fixed volumes in pockets and advancing them with each rotation. So the other subtype is the rotary pump. For reference, gear pumps are a common example within this rotary family.

Positive displacement pumps come in two main families: reciprocating and rotary. A piston pump is an example of the reciprocating type, where a piston moves to trap a fixed amount of fluid and push it out with each stroke. The other main family is rotary pumps, which move fluid by the continuous rotation of gears, lobes, vanes, or screws, trapping fixed volumes in pockets and advancing them with each rotation. So the other subtype is the rotary pump. For reference, gear pumps are a common example within this rotary family.