Professional pumps and pump parts for complete fluid systems
UMYTEC supplies professional pumps and replacement parts for car-wash systems, pressure washers, industrial cleaning equipment, water-supply circuits, dosing applications and fluid-transfer installations. The range is divided into high-pressure pumps, low-pressure pumps and pump spare kits so that each part of the system can be selected according to its actual function.
A high-pressure pump creates the flow required for washing, spraying or water jetting. A low-pressure pump may supply water to the main pump, transfer liquid, maintain system pressure or provide accurate dosing. Spare kits restore the hydraulic section of an existing pump without replacing the complete unit.
These product groups solve different technical problems. Selecting the correct category first makes it easier to compare flow rate, working pressure, pump speed, motor arrangement, liquid compatibility and installation dimensions.
Choose the correct pump category
High-pressure pumps
Triplex plunger pumps and specialist high-pressure models for pressure washers, car washes, industrial cleaning, misting and water-jetting systems.
Browse high-pressure pumps →
Low-pressure pumps
Feed, transfer, self-priming, multistage and rotary-vane pumps for water supply, dosing and fluid movement at lower operating pressures.
Browse low-pressure pumps →
Pump spare kits
Water-seal kits, valve kits, ceramic pistons and other replacement components for maintaining and repairing professional pumps.
Browse pump spare kits →
| Product group |
Primary function |
Typical selection parameters |
Typical applications |
| High-pressure pump |
Produces controlled flow for a pressurised washing or process circuit. |
Flow, working pressure, rpm, motor power, temperature and shaft dimensions. |
Car washing, pressure washing, industrial cleaning, misting and water jetting. |
| Low-pressure pump |
Supplies, transfers, circulates or doses liquid within the system. |
Required flow, delivery head, suction conditions, liquid type and connection size. |
Feed systems, water transfer, reverse osmosis, dosing and pressure boosting. |
| Spare kit or replacement part |
Restores sealing, valve operation or plunger condition in an existing pump. |
Complete pump model, production version, plunger diameter and required repair type. |
Preventive maintenance, pressure-loss repair, leakage repair and pump rebuilding. |
Start with the function of the component. A low-pressure supply pump cannot replace a high-pressure plunger pump, and a repair kit must be matched to the complete pump model rather than selected only by brand.
Read the complete pump selection guide High-pressure pumps, low-pressure pumps, spare kits, applications and replacement selection
High-pressure pumps for washing and industrial systems
High-pressure pumps are used when a system must deliver water through a restrictive nozzle, cleaning head, spray circuit or industrial process at substantially higher pressure than the normal water supply.
Professional washing systems commonly use positive-displacement plunger pumps. These pumps deliver a predictable flow in relation to displacement and rotational speed. Pressure develops when the downstream nozzle or process restricts that flow.
The correct high-pressure pump is selected according to:
- required flow in litres per minute,
- normal and maximum working pressure,
- pump and motor speed,
- absorbed motor power,
- continuous inlet-water temperature,
- water quality and chemical exposure,
- daily operating time and bypass conditions,
- shaft, mounting and connection dimensions.
The dedicated high-pressure category provides the full technical selection guide and access to separate brand ranges from HAWK, Interpump, CAT Pumps and UDOR.
Low-pressure pumps for supply, transfer and dosing
Low-pressure pumps perform a different role. They are used where the main requirement is to transfer liquid, maintain a stable feed supply, create moderate delivery pressure or dose a controlled volume.
The available constructions include multistage centrifugal pumps, self-priming water pumps and volumetric rotary-vane pumps. Each type has a different performance curve and suction behaviour.
Feed and booster pumps
A feed pump supplies water to another component or increases inlet pressure. In a car wash or industrial cleaning system, it may feed a high-pressure plunger pump from a storage tank, water-treatment system or long supply line.
The feed pump must provide sufficient flow under real operating conditions. A nominal flow measured at zero delivery head is not enough if filters, valves, pipes and height differences create resistance.
Self-priming pumps
Self-priming pumps are useful where the pump must draw water from a tank or where the suction line is not permanently flooded. The maximum practical suction height depends on water temperature, pipe diameter, restrictions and air tightness.
Rotary-vane pumps
Volumetric rotary-vane pumps provide compact dimensions and relatively stable low-pulsation flow. They are commonly used for dosing, beverage equipment, water treatment and precise liquid transfer at lower pressures.
Liquid viscosity, lubricity, chemical composition and filtration must be checked before selecting a rotary-vane pump.
Pump spare kits and replacement components
Pump spare kits allow worn hydraulic components to be replaced without purchasing a complete new pump. They are used for preventive maintenance and for repairing symptoms such as external water leakage, reduced pressure, unstable flow or excessive pulsation.
| Spare-part group |
Main function |
Typical symptoms |
| Water-seal kit |
Seals the moving ceramic plungers in the hydraulic head. |
Water leakage, reduced pressure or worn packing components. |
| Valve kit |
Controls inlet and discharge flow in each pumping chamber. |
Pulsation, unstable pressure, reduced flow or poor suction. |
| Ceramic piston or plunger |
Provides the hard, smooth moving surface required by the water seals. |
Cracks, scratches, rapid seal failure or water entering the crankcase. |
| Other repair components |
Supports guides, seals, bearings or other model-specific assemblies. |
Mechanical wear, damaged support rings or a complete pump rebuild. |
Spare parts must be identified from the full pump model and, where relevant, the plunger diameter or production version. Similar-looking kits from another frame size may contain different seals, valves or support rings.
Pump selection according to system function
| System requirement |
Relevant product group |
Main selection priority |
| Generate washing pressure |
High-pressure pump |
Flow, working pressure, rpm, motor power and nozzle capacity. |
| Feed a high-pressure pump |
Low-pressure feed pump |
Required inlet flow, delivery head, tank arrangement and available suction conditions. |
| Transfer water or process liquid |
Transfer or self-priming pump |
Liquid type, suction lift, pipe losses and required delivery point. |
| Dose a controlled liquid volume |
Volumetric rotary-vane pump |
Flow accuracy, viscosity, lubricity, pressure and chemical compatibility. |
| Repair an existing pump |
Pump spare kit |
Complete model code, failure symptoms and required service operation. |
Pumps for car-wash systems
A car-wash installation can use several different pumps. The main washing circuit normally uses a high-pressure plunger pump. A separate supply pump may feed treated water from a storage tank, while smaller volumetric pumps may be used in dosing or auxiliary circuits.
The correct combination depends on the wash programme, number of active bays or nozzles, water-treatment system, available motor power and operating schedule.
For the high-pressure circuit, flow, pressure and rpm are the principal hydraulic parameters. For the supply circuit, sufficient inlet flow and stable feed pressure are critical. If the feed pump is undersized, the high-pressure pump may cavitate even though its own specification is correct.
Pumps for professional and industrial cleaning
Professional pressure washers and industrial cleaning systems require a pump matched to the real operating point rather than the highest catalogue rating. Higher pressure increases cleaning impact, while higher flow improves rinsing and the removal of loosened contamination.
Industrial installations may also require hot-water capability, chemical-resistant materials, continuous-duty construction or several simultaneous washing circuits. These requirements should be defined before selecting the pump frame or manufacturer.
Low-pressure pumps support these systems by transferring water, feeding treatment equipment or maintaining stable inlet conditions. Spare kits then allow planned maintenance throughout the service life of the installation.
Replacing an existing pump
A replacement pump should provide the required hydraulic performance without overloading the motor or requiring unexpected mechanical modifications.
Before selecting a replacement, record:
- the complete manufacturer and model designation,
- required flow and working pressure,
- pump and motor speed,
- motor power and electrical frequency,
- shaft diameter, keyway and direction of rotation,
- mounting-hole spacing and shaft height,
- inlet and discharge connection positions,
- water temperature and chemical exposure,
- photographs of the pump nameplate and installation.
A pump from another manufacturer may be suitable, but flow and pressure alone do not prove interchangeability. A new coupling, mounting plate, pulley, hose arrangement or regulating valve may be required.
Related components in a pump system
The pump must be selected as part of the complete hydraulic and mechanical system. Depending on the application, the installation may also require:
- unloader valves for controlling and bypassing high-pressure flow,
- pressure-regulating valves for maintaining the required operating pressure,
- filters for protecting valves, seals and dosing components,
- pressure gauges and safety-relief valves,
- couplings, pulleys or gearboxes for transferring motor power,
- pressure-rated hoses and compatible fittings,
- spray guns, lances, nozzles and cleaning heads,
- pump service kits for planned maintenance.
An incorrectly sized accessory can reduce flow, create excessive pressure loss or expose the pump to unsafe operating conditions.
Pump maintenance and service life
Service life depends on water quality, inlet conditions, temperature, operating speed, duty cycle and correct system adjustment. Preventive inspection helps identify worn hydraulic components before they damage the crankcase or motor.
- Maintain adequate inlet flow and prevent cavitation.
- Clean or replace filters at suitable intervals.
- Check the crankcase oil level and condition.
- Inspect the pump for water and oil leakage.
- Do not operate a high-pressure pump dry.
- Avoid excessive operation in bypass.
- Protect the pump and connected lines from freezing.
- Use the correct service kit for the complete model code.
Pressure loss does not automatically mean that the complete pump must be replaced. Worn valves, water seals, a damaged ceramic plunger, an incorrect nozzle or insufficient inlet supply can produce similar symptoms.
Choose the correct next step
Choose the product group according to what the system must do.
Select a high-pressure pump when the system must generate washing or process pressure. Select a low-pressure pump for water supply, transfer, boosting or dosing. Use the spare-kit category when servicing an existing pump.
For replacement selection, compare the complete operating point and installation dimensions rather than relying only on the manufacturer or maximum pressure.
Frequently asked questions about pumps
What products are included in the UMYTEC Pumps category?
The category includes high-pressure pumps, low-pressure pumps and pump spare kits. Each group has a different function within a washing, dosing or fluid-transfer system.
What is the difference between a high-pressure and low-pressure pump?
A high-pressure pump supplies flow to a restrictive nozzle or process circuit at elevated pressure. A low-pressure pump primarily transfers, feeds, boosts or doses liquid at lower pressure.
Which pump is required for a self-service car wash?
The washing circuit normally requires a high-pressure plunger pump. The installation may also use a low-pressure feed pump for treated water and smaller pumps for dosing or auxiliary circuits.
Can a low-pressure pump feed a high-pressure pump?
Yes, when the supply circuit is designed for it. The feed pump must deliver sufficient flow and inlet pressure after accounting for filters, pipe losses and the water-treatment system.
Should I repair or replace my existing pump?
A pump with worn seals or valves may only require a service kit. Replacement is more appropriate when the crankcase, manifold, shaft or other major components are damaged, or when the existing pump no longer meets the required operating point.
How do I select the correct pump spare kit?
Use the complete pump model and identify whether the repair requires water seals, valves, ceramic plungers or another component. Some pump families also require confirmation of the plunger diameter or production version.
Can I replace a pump with a model from another brand?
Possibly. The replacement must match the required flow, pressure, rpm, motor power, shaft, rotation, mounting dimensions, connections, temperature rating and liquid compatibility.
What information should I provide when requesting a quotation?
Provide the pump or product model, required flow and pressure, rpm, motor details, application and photographs of the nameplate or current installation.
