High-pressure pumps by CAT PUMPS
CAT PUMPS is a manufacturer of high-pressure pumps: founded in 1968 in Minneapolis (USA) and represented in Idstein, Germany, by CAT PUMPS Deutschland GmbH since 1973. From here we supply and support plunger and piston pumps for Germany, Austria and Eastern Europe – with sizing advice, spare parts from our German warehouse and repair service.
How a high-pressure pump works
Our high-pressure pumps are triplex positive-displacement pumps: three plungers or pistons set 120° apart displace a fixed volume with every revolution. Flow therefore depends only on speed, not on back pressure – pressure is created by the resistance in the system, such as the nozzle. The result is a steady flow at high efficiency, even in continuous duty.
High-pressure pump basicsPlunger pump or piston pump?
Plunger pumps use stationary seals and spring-loaded valves. They reach pressures up to 690 bar and are available in many wetted materials. Piston pumps have strong suction capability and are less prone to cavitation – the rugged choice for pressures up to 105 bar.
Sizing by flow and pressure
The starting point is the duty point: required flow in l/min and working pressure in bar. The pump finder lists every model that covers it, along with the required speed and drive power. Flow is set via the belt ratio or a frequency inverter; as a rule of thumb, drive power is pressure × flow / 480 = kW.
Materials, fluids and applications
Available in brass, nickel-aluminium bronze (NiAlBr), stainless steel 304 and 316, duplex and other special materials – for tap water as well as demineralised and RO water, hot water up to 116 °C and chemicals. Typical applications include high-pressure cleaning and vehicle washing, reverse osmosis, humidification and spray cooling, water mist fire protection, pressure testing, deburring and process engineering.
News
All news-
FDA-Compliant Materials for High-Pressure Pumps
Any Cat Pumps stainless steel pump can be fitted with materials that meet the requirements of the US Food and Drug Administration (FDA) – with a works certificate and material specification. What this covers and where its limits are.
-
Cat Pumps joins Franklin Electric
Cat Pumps Corporation is now part of Franklin Electric Co., Inc. Operations, brands and the team in Minneapolis remain in place – and nothing changes for you in Germany.
-
Updated All-316 Stainless Steel Plunger Pump
The Model 6835 delivers up to 40 GPM (151.4 l/min) at 3,000 PSI (207 bar). All internal components are now all-316 stainless steel, and the inlet ports have been enlarged to 2" NPTF.
Quality without compromise
Every pump is tested before delivery – built for years of continuous operation.
Documentation for every model
Data sheet, service and operating manuals plus CAD files are free to download.
Experienced technical support
Sizing, commissioning, spare parts: advice straight from the factory sales team.
Quick delivery from stock
Common pumps, valves and seal kits ship at short notice from our German warehouse.
Need help selecting a pump?
Our technical sales team will size your pump by flow, pressure and medium – free of charge and direct.