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What is a Piston Pump?

What is a Piston Pump?

A piston pump is a type of reciprocating pump that moves and pressurizes fluid by using one or more reciprocating pistons. Three main components can always be found in every piston pump; a piston, a crank, and inlet and outlet valves. The piston is the main source for allowing the liquid to flow in and out through the valves. Attached to the motor, the crank will move in a rotational fashion allowing the repetitive back and forth movement of the piston. Finally, each piston pump will have an inlet and outlet valve. These two valves allow for the liquid or gas to enter and exit the cylinder.

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Why Preventative Maintenance for Piston Pumps is Important

Piston pumps are used across manufacturing industries as simple hydraulic pumps with many different uses. Some people mistakenly believe that since piston pumps are simple, that maintenance won’t be required. Let’s talk about what a piston pump is, how it’s used, and why it’s so important to maintain.  


What is a piston pump?  

A piston pump works by moving fluids and gases into and out of its chamber. When the piston cup, or moving part within the piston, pushes down, it creates high pressure which allows the chamber to fill. When the piston cup completes its upstroke, that pressure is relieved, which forces the fluid or gas in the chamber out for use.  

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