CAT Pumps 550.3000 Pump, 5.0 GPM, 3000 PSI
Genuine Cat Pumps OEM — Cat Pumps Corporation, HQ Minneapolis, MN — supplied by ForeverPure Corporation, an authorized Cat Pumps distributor in Santa Clara, California.
The Cat Pumps 550.3000 is a genuine Cat Pumps OEM pump for Cat Pumps industrial triplex pumps. Supplied direct through Cat Pumps Corporation — built, machined, and pressure-tested to the original factory specification.
Typical Applications & Industries
Common Applications
- Commercial & industrial reverse osmosis
- Pressure washing & car wash
- Industrial cleaning & wash-down
- Agricultural spraying
- Misting & evaporative cooling
- Food & beverage process water
Industries Served
- Water treatment & desalination
- Commercial car wash & detailing
- Agriculture & irrigation
- Oil & gas (produced water)
- Food & beverage processing
- Industrial cleaning & facility services
Documentation & Service
📄 Cat Pumps Data Sheet (PDF)🔧 Cat Pumps Service Manual (PDF)
The data sheet carries the specifications, the exploded view, the numbered parts list and the seal and valve kit tables. The service manual covers installation and start-up, valve and seal servicing, the torque chart and troubleshooting.
Specifications & Dimensions
Overall size: 13.58 x 9.61 x 5.91" (345 x 244 x 150 mm) — weight 26.5 lbs (12.0 kg). The shipping weight shown at checkout already allows for packaging.
| Specification | Value | Metric |
|---|---|---|
| Max Flow | 5 gpm / 18.9 lpm | — |
| Max Pressure | 3000 | — |
| RPM | 1415 | — |
| Inlet Port Size | 1/2" NPT(F) | — |
| Discharge Port Size | 3/8" NPT(F) | — |
| Material | Brass | — |
| Bore | 0.708" | 18 mm |
| Stroke | 0.945" | 24 mm |
| Inlet ports | 1/2" NPT(F) | 1/2" NPT(F) |
| Discharge ports | 3/8" NPT(F) | 3/8" NPT(F) |
Figures as published by Cat Pumps for this model (530_K). Cat publishes the envelope and the port and shaft interface but no dimensioned outline drawing; ask us if you need one for a skid layout.
Performance & Sizing
The 550.3000 is a positive-displacement pump, so it has no flow-versus-pressure curve in the sense a centrifugal pump does, and Cat Pumps does not publish one. Flow is set by the displacement and the shaft speed and stays essentially constant as discharge pressure rises. Pressure is set by the restriction downstream — the nozzle, orifice or membrane array — and capped by the regulating device, not by the pump.
To work out flow at another speed, or to size the drive, use the relations Cat Pumps prints on its data sheets:
| Flow at another speed | Desired GPM = Rated GPM × (Desired RPM ÷ Rated RPM) |
| Required horsepower | HP (electric brake) = GPM × PSI ÷ 1460 |
Rated speed for this model is 1415 rpm.
Maximum ratings apply individually — do not assume maximum flow and maximum pressure can be taken together. A primary pressure-regulating device and a secondary safety relief device are both required in the system. Talk to us before ordering if your duty sits near a limit.
Frequently Asked Questions
What is the Cat Pumps 550.3000?
The Cat Pumps 550.3000 is a genuine Cat Pumps OEM pump for Cat Pumps industrial triplex pumps. Supplied through Cat Pumps Corporation (HQ Minneapolis, MN) and built to the original factory specification.
Is this the correct pump for my pump?
Cat Pumps parts are model-specific — share your Cat pump's model number, serial number, and date of manufacture with the ForeverPure applications team and we'll confirm the correct pump for your unit.
Where is the Cat Pumps 550.3000 manufactured?
Cat Pumps Corporation is headquartered in Minneapolis, Minnesota (1681 94th Lane NE, Minneapolis, MN 55449) and has been the Cat Pumps brand owner since 1968. Cat Pumps triplex pumps, spare parts, and accessories are manufactured at the company's US and Japan production facilities to Cat Pumps Corporation's ISO 9001:2015 factory specifications — the country of origin for this specific SKU is listed in the technical specifications table above.
How do I get a quote or datasheet for the Cat Pumps 550.3000?
Call ForeverPure Corporation at +1-408-969-2688, email sales@foreverpure.com, or request a quote through the website. As an authorized Cat Pumps distributor, ForeverPure provides factory-direct pricing, datasheets, cross-reference support, and same-day turnaround on most quote requests.
What is the warranty on the Cat Pumps 550.3000?
Cat Pumps factory warranty: 1 year on complete pumps, 90 days on parts and accessories, from date of purchase from an authorized distributor. ForeverPure honors and administers Cat Pumps warranty claims for customers in North America.
Service Videos
Cat Pumps’ own service videos for this pump. Follow them alongside the service manual and data sheet — the manual carries the torque figures and the exploded view.
Servicing Valves - Cat Pumps Model 530, 550
Servicing Seals - Cat Pumps Model 550
Recommended Accessories for This Pump
Cat Pumps specifies these accessories for this pump. A regulator or unloader and a relief device are required on any high-pressure system; an inlet filter and the correct crankcase oil are what actually determine how long the pump lasts.
| Accessory | Cat Pumps part |
|---|---|
| Pressure Regulator | 7003 |
| Pressure Sensitive Regulating Unloader | 7694 |
| Pop-Off Valve | 33962 |
| Pulsation Dampener-Rechargeable-NBR | 6029 |
| Pressure Gauge | 6089 |
| Valve Plug Adapter | 34447 |
| Crankcase Oil | 6107 |
| Oil Drain Kit | 34334 |
| Inlet Filter | 7104.4 |
| Inlet Pressure Stabilizer | 711500 |
| Pulse Pump | 6340 |
| Gun - Shut-Off | 36140 |
Accessory pairings as published by Cat Pumps for this model. Not sure which you need? Send us your duty point and we will specify the set.
