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CAT Pumps 3CP1120 Belt Drive Triplex Plunger Pump - 4.2 GPM, 2200 PSI, 1725 RPM

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16.00 lbs
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Belt-drive triplex plunger pump with brass manifold, stainless steel valves, and Buna seals. 4.2 GPM, 1725 RPM, 2200 PSI.

NOTE: Brackets not included.


Technical Specifications

Bore: 18 millimeter
Crankcase Capacity: 12 ounce
Inlet Port: 1/2 inch
Max GPM: 4.2
Max PSI: 2200
Max Temperature: 160 degrees F
RPM: 1725
Shaft Diameter: 16.5 millimeter
Stroke: 12.7 millimeter

Product Description

4.2 GPM Brass Manifold Triple Plunger Pump

The CAT Pumps 3CP1120 pump is a positive displacement, reciprocating, three plunger rod pump. It has a brass manifold, 304 stainless steel valve assemblies, solid ceramic plungers, and standard NBR (Buna-N) seals and O-rings.
Designed for belt-driven applications, this high-pressure triplex pump is durable and reliable enough for commercial applications like car washes and pressure washing businesses. 4.2 GPM flow rate, 2200 maximum PSI, and 1725 maximum RPM.

  • 4.2 GPM maximum flow rate
  • 100-2200 PSI pressure range
  • 1725 RPM
  • 1/2" NPTF inlet ports (2)
  • 3/8" NPTF discharge ports (2)
  • Either side pulley mounting
  • 12 ounce crankcase capacity
  • 160 Degrees Fahrenheit standard liquid temperature
  • .50" (12.7 mm) stroke
  • .65" (16.5 mm) shaft diameter
  • .709" (18 mm) bore
  • Brass manifold
  • 304 stainless steel valves
  • Buna-N seals and O-rings
  • Belt drive type
  • Dimensions: 9.1" x 8.78" x 5.47"
  • Triplex design offers high-efficiency and low pulsation.
  • Durable high-pressure seals are lubricated and cooled by pumped liquid.
  • Pre-set Lo-Pressure seals provide secondary protection against external leaks and require no packing adjustment.
  • Special high-density, polished, concentric plungers provide a true wear surface and extended seal life.
  • Specially formulated seals offer unmatched performance and extended life.
  • Convenient press-in style seal case and interchangeable inlet and outlet valves for easy servicing.
  • Wet-end easily serviced without entering crankcase.

Product Reviews

Frequently Asked Questions

Question:Will be changing from a T47 series general pump do I have to have an adapter bushing to do this? - Steve (01/02/2024)
Response:There are quite a few different T-47 series pumps. The 3CP1120 has a 16.5mm shaft, T-47 models have 24mm shaft, so an adapter would be necessary. I'll have Shaun or Marty reach out to you to confirm.