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CAT 2SF22ES Hollow Shaft Pressure Washer Pump

CAT 2SF22ES Hollow Shaft Pressure Washer Pump



This 2.2 GPM 2000 PSI 5/8″ Hollow Shaft reciprocating, plunger pump is constructed of a 316SS manifold, 316SS valve assemblies, and solid ceramic plungers.

This is a triplex [three plunger rods] positive displacement, reciprocating, plunger pump, constructed of a 316SS manifold, 316SS valve assemblies, solid ceramic plungers and standard NBR [Buna-N] seals and o-rings. This is a hollow-shafted pump designed to bolt directly to a c-face electric motor, providing easy, compact installation.


  • Maximum Volume: 2.2 GPM

  • Maximum Discharge Pressure: 2000 PSI

  • Maximum Inlet Pressure: 100 PSI

  • Maximum Pump Speed: 3450 RPM

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

  • Stroke: 3.1 mm

  • Shaft Diameter: 11 mm

  • 5/8″ Hollow Shaft

  • Inlet Port: 3/8″ FPT

  • Discharge Ports: 2 x 3/8″ NPT

  • By-Pass Port: 1/4″ NPT

  • Approximate Weight: 11 lbs.

Weight 12 lbs
Shaft Diameter

.433 in / 11 mm

Max Volume

2.2 GPM

Max Discharge Pressure

2000 PSI

Max Pump Speed

3450 RPM

Bore Diameter

.709 in / 18 mm


.122 in / 3.1 mm

Max Fluid Temp.

140 F

Inlet Port

3/8" F

Discharge Port

3/8 NPT

By-Pass Port

1/4" NPT

Standard Temperature

160 F


Stainless Steel




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