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High Pressure Piston Pumps



High pressure piston pumps are commonly found in truck wash/car wash, misting, water jetting, sewer cleaning, pressure washer, industrial cleaning, reverse osmosis and carpet cleaning markets. These pumps can vary in flow rates from less than a gallon per minute for misting applications to hundreds of gallons a minute for sewer and industrial cleaning. Pressure ranges can vary from 200 psi for low pressure cleaning to over 1,500 psi for water blasting applications. Some of the most common high pressure piston pump manufacturers are:

Cat Pumps

Arimitsu Pumps

AR Pumps





High Pressure
Piston Pumps



High Pressure
Piston Pump/
Motor Packages
High pressure piston pumps can be run in continuous-duty applications but require full discharge of pump flow or bypass of a portion of the flow through pressure relief valves. Usually the bypass flow portion will be returned to the water supply tank or can also be re-circulated back into the inlet side of the pump.

Triplex piston pumps feature three piston assemblies that produce pump flow and pressure. These pumps are usually powered by electric motors, hydraulic motors, gas or diesel engines. The drive rpm determines specific flow output for a particular pump. Pumps should not be run in excess of rated rpm or pressure ratings. Pulley drive styles are available in many flow and pressure ranges.

Additional pump features include brass, chrome-plated or stainless steel manifolds with Buna or Viton® seals for chemical compatibility. High pressure piston pumps are rated from 140-160F fluid temperatures. Pumped fluids generally need to be clean water with soap or chemical added into the pumped flow upstream or downstream of the pump.

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