Cat Pumps 5CP3120 Plunger Pump – 4.5 GPM, 3500 PSI | Summary
The Cat Pumps 5CP3120 is a high-performance industrial plunger pump designed for continuous-duty applications. Built with a brass manifold, 304 stainless steel valve assemblies, solid ceramic plungers, and durable Buna-N seals and O-rings, this triplex pump delivers reliability and longevity under high-pressure operation.
Ideal for pressure washing, car wash systems, and other industrial applications, the 5CP3120 delivers 4.5 GPM at up to 3500 PSI and is engineered for belt, clutch, or flexible coupling drive systems. With a proven reputation for quality, this Cat Pump is built to handle demanding conditions with minimal maintenance.
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Durable Construction – Brass manifold with stainless steel valves and ceramic plungers for maximum life.
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Triplex Design – Three plunger rods ensure smooth, low-pulsation flow.
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Versatile Drive Options – Compatible with belt, clutch, flexible coupling, and bellhousing drives.
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Reliable Seals – Outfitted with standard Buna-N (NBR) seals and O-rings for dependable chemical resistance.
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Field Proven – Trusted by professionals for pressure washing and industrial-grade applications.
| Specification | Details |
| Brand | Cat Pumps |
| Model | 5CP3120 |
| Max Flow Rate | 4.5 GPM |
| Max Pressure | 3500 PSI |
| RPM | 1645 RPM |
| Inlet Port Size | 1/2" NPT(F) |
| Discharge Port Size | 3/8" NPT(F) |
| Drive Type | Belt, Clutch, Coupling |
| Manifold Material | Brass |
| Valve Material | 304 Stainless Steel |
| Seal Material | NBR (Buna-N) |
| Pump Type | Triplex Plunger Pump |
| Product Type | Warranty Period |
| Triplex Plunger & Piston Pumps | 5 Years from date of sale |
| Car Wash Pumps (W770, S, SB manifold - self-service use only) | Lifetime warranty (manifold only) |
| All other pumps (not listed above) | 1 Year from date of sale |
| Accessories | 90 Days from date of sale |
| Full Warranty Document | See PDF |
