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CAT 3CP1120 Solid Shaft Pressure Washer Pump

CAT 3CP1120 Solid Shaft Pressure Washer Pump

SKU: 3CP1120


This 4.2 GPM 2200 PSI direct-drive triplex positive displacement, reciprocating, plunger pump is constructed of a forged brass manifold, 304SS valve assemblies, and solid ceramic plungers.

This is a triplex (three plunger rods) positive displacement, reciprocating, plunger pump, constructed of forged brass manifolds, 304 SS valve assemblies, solid ceramic plungers and standard NBR [Buna-N] seals and o-rings. The 1725 RPM permits multiple drive options including direct drive, flexible coupling, clutch or belt drive.


  • Maximum Volume: 4.2 GPM

  • Maximum Discharge Pressure: 2200 PSI

  • Maximum Inlet Pressure: 100 PSI

  • Maximum Pump Speed: 1725 RPM

  • Standard Liquid Temperature: 160 F (Above 130 F call CAT PUMPS for inlet conditions and elastomer recommendations)
  • Bore Diameter: 18 mm

  • Stroke: 18 mm

  • Shaft Diameter: 12.7 mm

  • Solid Shaft

  • Approximate Weight: 15 lbs.

Please Note: Pump Rails show on image are not included with pump.

Weight 16 lbs
Shaft Diameter

.5 in 12.7 mm

Max Discharge Pressure

2200 PSI

Max Pump Speed

1725 RPM

Max Inlet Pressure

100 PSI

Bore Diameter

.709 in / 18 mm


.709 in / 18 mm

Standard Temperature

160 F






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