Interpump Pressure Washer Pump Valve Kit - OEM Number: Kit 1

The Interpump Pressure Washer Pump Valve Kit (KIT 1) is a replacement valve set for compatible Interpump high-pressure washer pumps. The kit contains six valves, providing a complete set for replacing the pump's suction and delivery valves and helping restore correct water flow and pressure performance.

Worn or damaged pump valves can cause reduced pressure, poor pump performance, pressure fluctuations or difficulty maintaining the required operating pressure. Replacing the complete valve set provides a practical solution when servicing the pump and helps restore reliable operation. KIT 1 is used across a wide range of Interpump pump series, including selected W, WS and WW models.

FUNCTION AND OPERATION

• Replaces worn or damaged suction and delivery valves within the pump.
• Contains six valves to service the complete valve arrangement.
• Helps restore correct water flow through the pump.
• Supports the pump's ability to build and maintain operating pressure.
• Helps resolve symptoms such as pressure fluctuation, reduced output or valve bypass.
• Provides a practical replacement kit during pump servicing or overhaul.

TECHNICAL DETAILS

• Brand: Interpump
• Part Type: Pressure washer pump valve kit
• Kit Number: KIT 1
• Contents: 6 valves
• Valve Type: Suction and delivery valves
• Application: High-pressure pump

TYPICAL APPLICATIONS

• Interpump W-series pressure washer pumps
• Interpump WS-series pressure washer pumps
• Interpump WW-series pressure washer pumps
• Interpump W201 and WS201 pumps
• Selected W70, W71, W151, WS102, WS133, WS135 and WS137 pumps
• Other compatible Interpump pumps using KIT 1 valve components

IMPORTANT INFORMATION

The correct valve kit depends on the exact pump model and series. KIT 1 is used across a substantial range of Interpump pumps, but it should not be assumed to fit every Interpump pressure washer pump. Always check the pump model, serial number and existing valve arrangement before ordering.

When servicing a pump, replacing the complete set of valves at the same time can help ensure consistent performance and avoid leaving worn valves within the pump assembly.

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery*
£11.95 or FREE for orders over £150
Orders placed before 4pm Monday to Friday will be delivered on the next business day.
Orders placed after 4pm on Friday will be delivered the following Tuesday.
*Next day delivery applies to stocked items only. Availability can be found on the product pages.

Premium Delivery*
£30.00 for delivery before 10:30am
£25.00 for delivery before 12:30pm
*Premium delivery applies to stocked items only. Availability can be found on the product pages.

For all other countries, please click here for full delivery information.

**Separate carriage charges apply to bulk products such as 205L barrels.