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CAT Pumps 5CP3120 Industrial Triplex Plunger Pump - 4.5 GPM, 3500 PSI, 1645 RPM

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21.80 lbs
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This plunger pump is designed to handle industrial application. Features press-in seal cases make servicing the valves easy. Pump produces a maximum flow rate of 4.5 GPM.

Note: Rails and shaft cover sold separately 


Technical Specifications

Bore: 16 millimeter
Shaft Diameter: 20 millimeter
Stroke: 18 millimeter
RPM: 1645
Max Temperature: 160 degrees F
Crankcase Capacity: 17 ounce
Inlet Port: 1/2 inch
Max GPM: 4.8

Product Description

5CP Plunger Pump

The CAT Pumps 5CP3120 is a triplex plunger pump engineered for industrial applications making it great for demanding car washes. Constructed with a brass manifold, 304 stainless steel valve assemblies, solid ceramic plungers and standard NBR (Buna-N) seals and O-rings. Compatible with motors that connect to a compact direct-drive mount bell housing with a flexible coupling. Servicing the valve assemblies is easy thanks to press-in seal cases. 

Note: Rails and shaft cover sold separately 


  • Max Flow: 4.5 GPM
  • Max Pressure: 3500
  • Inlet Port Size: 1/2" NPT(F)
  • Discharge Port Size: 3/8" NPT(F)
  • RPM: 1645
  • Stroke: 0.709"
  • Inlet Pressure Range: -2.5 to 60 PSI
  • Max. Liquid Temp. (NBR): 160° F
  • Bore: 0.630" (16 mm)
  • Crankcase Capacity: 17 oz.
  • Inlet Ports (2): 1/2" NPT(F) 1/2" NPT (F)
  • Discharge Ports (2): 3/8" NPT (F) 3/8" NPT (F)
  • Shaft Diameter: 0.787"
  • Drive Type(s): Belt, Clutch, Flexible Coupling and Bellhousing
  • Material: Brass
  • Dimensions: 10.90 x 10.0 x 5.79"
  • Weight: 21.80 lbs.

Product Reviews

Frequently Asked Questions

Question:Need this Pump with all the equimpent to workl.. pressure release valve , pulley , raill base . please help me on this matter thanks - Julio (08/16/2023)
Response:Hi Julio, please contact our sales department for your different options and pricing, our sales team can help you get the right equipment and configurations for your wash. Please call 800-233-3873.
Question:What pulley, pulley shaft key, and mount goes with this pump? - Mylinda (03/15/2021)
Response:There are different options, please contact our sales department for your different options and pricing 800-233-3873.