Cat Pumps is widely recognised as the world leader in industrial reciprocating high-pressure pumps. High quality components, exceptionally long lasting seals and field-proven dependability have made the Cat pump the pump of choice where continuous-duty performance and low maintenance are a priority in industrial applications.

All our pumps utilise the proven reciprocating positive-displacement principle, with either 3 pistons or 3 plungers to deliver a smooth discharge from the pump. This is the most cost-effective design for achieving high efficiency and low pulsations. Although Cat pumps will operate at 0.1 litres/min and below, and as low as 7 bar discharge pressure, our specialisation lies in high pressures. ‘High’ means different things to different people, but we use ‘high pressure’ to describe anything above the capabilities of most roto-dynamic (centrifugal) pumps. Cat pumps are most commonly found in arduous applications between 20 bar and 400 bar, delivering flow rates of up to 320 litres/minute per pump and more in multi-pump installations.

Consistent output - flow rate is unaffected by discharge pressure, liquid viscosity or specific gravity.
Flow proportional to speed - the pump output is directly and linearly proportional to the operating speed of rotation, making it easy to predict and control pump performance. Cat pumps also work well with variable frequency drive (VFD) 'inverter' speed controls.
No rubbing surfaces - as there is no relative movement between hard contact surfaces within the pump head, unlike a gear or vane pump a Cat pump will work with almost any liquid and does not rely on the lubricating properties of the pumped fluid.
Continuous-duty performance - all Cat pumps are designed to work continuously at rated duty and still perform longer than inferior intermittent-rated pumps.
High Efficiency - low friction and almost no internal slippage results in overall energy efficiencies between 85% and 95%, minimising life-cycle operating costs.
Low-maintenance - a proprietary blend of seal material with 3-4 times longer life expectancy and no requirement for packing adjustment together with exceptionally long component life minimises down-time and maintenance costs.
Solid ceramic plungers - all Cat pumps plunger pumps use smooth, hard plungers that are manufactured by a unique process which enables liquid to be actually held within the pores of the alumina ceramic. These are located concentrically to ensure true seal alignment so that when genuine replacement seals are eventually required, these will last as long as the original seals. Truly a ‘Pump with 9 Lives’.
No intermixing of liquids - Cat pumps are made with a generous space between the pump head and oil-bath crankcase to eliminate intermixing of lubricant and process fluid. An open drainage area beneath the pump also ensures any leakage is clearly visible.
Durable drive ends - Cat Pumps crankshafts, crossheads and connecting rods are manufactured to high specification with close, consistent tolerances.
Easy Servicing - even Cat Pumps seals do not last forever, but all our pumps can be readily serviced in situ or on the bench using non-specialist tools. Genuine original warranted spare parts are available for fast delivery from our extensive local stocks.

Cat Pumps reciprocating plunger pumps are available with forged brass, nickel aluminium bronze, 316 and Duplex grade stainless steel heads and wear-resitant concentric solid ceramic plungers with Cat Pumps exclusive design and material High-Pressure Seals.

We will select the right pump for you

Simply tell us the flow and pressure you require and what the pump will be used for. We need to know about the liquid, ambient and process temperatures, duty cycle, location, safe or hazardous area classification and type of drive required e.g. electric motor. The location of the application will generally determine the type of transmission. For more advice on pump installation, click here

For more detailed information on the construction of a Cat pump, please refer to our Technical pages