CAT Pumps 3CP1221 with 3CP stainless steel plunger pump

CAT Pumps 3CP1221 Pump
BrandCAT Pumps
Model Code 3CP1221
Model Info


  • Triplex plunger design
  • Lubricated low-pressure seals and hi-pressure seals
  • Inlet and discharge valve
  • Oil bath crankcase
  • Close tolerance concentricity of the ceramic plunger
  • Precision design 316 stainless steel valves and seats
  • 316 SSL manifolds
  • Die cast aluminum crankcase
  • Chrome-moly crankshaft
  • Oversized crankshaft bearings


  • Flow: 4.2 GPM
  • Pressure range: 100 to 2000 PSI
  • RPM: 1725 RPM
  • Stroke: 0.500"
  • Inlet pressure range: Flooded to 70 PSI
  • Bore: 0.709"
  • Crankcase capacity: 10 oz.
  • Maximum liquid temperature: 160°F
  • Inlet ports (2): 1/2" NPTF
  • Discharge ports (2): 3/8" NPTF
  • Pulley mounting: Either side
  • Shaft diameter: 0.650"
  • Weight: 14.84 lbs.
  • Dimensions: 9.69 x 8.78 x 5.35"
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