Product Overview

The Interpump WS202 Pressure Washer Pump is a professional industrial triplex plunger pump designed for demanding continuous-duty cleaning applications. Part of the trusted Interpump 47 Series range, the WS202 delivers up to 200 Bar operating pressure with a high flow rate of 21 litres per minute at 1450RPM, making it ideal for heavy-duty industrial cleaning systems requiring increased water flow and reliable long-term performance.

Built with a heavy-duty brass manifold, solid ceramic plungers, and precision-engineered internal components, the WS202 is engineered for durability, smooth operation, and extended service life. Its low-speed 1450RPM design helps minimise heat and wear, making it suitable for industrial pressure washers, static washdown systems, commercial vehicle cleaning, agricultural cleaning equipment, and hot or cold pressure washer installations.

The Interpump WS202 is widely used throughout professional cleaning industries where dependable performance, easy servicing, and excellent spare parts availability are essential.

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Key Features

• Genuine Interpump WS202 industrial pressure washer pump
• Heavy-duty 47 Series triplex plunger pump
• Produces up to 200 Bar operating pressure
• High flow rate of 21 litres per minute
• Low-speed 1450RPM operation for longer pump life
• Durable brass pump head construction
• Solid ceramic plungers for improved durability
• Suitable for continuous industrial use
• Compatible with hot and cold pressure washer systems
• Excellent availability of service kits and spare parts
• Smooth and reliable professional performance
• Ideal for industrial, agricultural, and commercial cleaning systems

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Technical Specifications

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Recommended Nozzle Size

For systems operating at 200 Bar with a flow rate of 21 litres per minute, it is recommended to use a Size 065 lance nozzle to achieve the correct operating pressure and water flow.

Using the correct nozzle size helps:

• Maintain accurate operating pressure
• Protect the pump from excessive strain
• Improve cleaning performance
• Reduce unnecessary component wear
• Ensure proper unloader valve operation

Incorrect nozzle sizing can lead to pressure loss, overheating, reduced cleaning efficiency, and premature pump wear.

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Industrial Applications

The Interpump WS202 is suitable for a wide range of industrial and professional cleaning applications including:

• Industrial pressure washers
• Agricultural cleaning equipment
• Commercial vehicle wash systems
• Factory and warehouse cleaning
• Food industry washdown systems
• Static pressure washer installations
• Motor pump units (MPU)
• Hot water pressure washers
• Cold water pressure washers
• Heavy-duty commercial cleaning systems

Its high flow rate and low-speed operation make the WS202 particularly suitable for demanding cleaning environments requiring increased rinsing power and consistent industrial performance.

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Recommended Service Kits & Spare Parts

Routine servicing helps maintain performance, maximise pump lifespan, and reduce costly downtime. Flowjet Cleaning Equipment supplies a full range of genuine Interpump service kits and spare parts suitable for the WS202 pump.

Popular service kits include:

Kit 1 – Valve Kit

Contains all 6 pump valves required for servicing and restoring pump performance.

Kit 2 – Oil Seal Kit

Contains the oil seals for all 3 pistons and is commonly used during routine maintenance and pump rebuilds.

Kit 220 – Hot Water Kit

Designed specifically for hot water pressure washer applications using the WS202 pump.

Kit 28 – Piston Repair Kit

Contains all seals and brass collars required for one piston assembly.

Kit 69 – Pump Seal Kit

Complete pump seal kit designed for preventative maintenance and routine servicing.

Using genuine Interpump repair kits helps maintain pressure output, improve reliability, and extend the working life of the pump.

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Common WS202 Pump Repairs

In some cases, the Interpump WS202 pump may develop leaks caused by cracked or damaged ceramic pistons. This can happen through heavy use, freezing conditions, dry running, or general wear over time.

If a ceramic piston becomes damaged, replacing it promptly can help prevent further seal damage, pressure loss, and internal pump wear.

Ceramic Piston Replacement

• Genuine Interpump ceramic piston
• Part Number: 47.0404.09
• Suitable for Interpump WS202 47 Series pumps
• Helps resolve leaks caused by damaged ceramic pistons
• Ideal during servicing and pump rebuilds

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WS202 Pump Maintenance Advice

For maximum reliability and long service life, it is recommended that the pump oil is replaced every 6 months minimum, particularly on heavily used industrial machines.

Routine maintenance should also include:

• Checking pump oil level and condition
• Inspecting seals for leaks or wear
• Monitoring valves and ceramic plungers
• Replacing worn seals before failure occurs
• Ensuring a clean and adequate water supply

Preventative maintenance significantly reduces wear and helps maintain consistent cleaning performance.

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Why Choose the Interpump WS202?

Interpump pumps are recognised worldwide for their engineering quality, reliability, and long operating life. The WS202 is a popular 47 Series pump thanks to its excellent balance of pressure, higher water flow, durability, and easy servicing.

Its low-speed 1450RPM operation reduces stress on internal components, while the heavy-duty brass manifold and ceramic plungers provide exceptional durability in demanding industrial cleaning environments.

Whether replacing an existing pump or building a new industrial pressure washer system, the Interpump WS202 delivers dependable professional performance supported by excellent spare parts availability and servicing support.

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Frequently Asked Questions

What pressure does the Interpump WS202 produce?

The Interpump WS202 delivers up to 200 Bar maximum operating pressure.

What flow rate does the WS202 provide?

The WS202 produces a flow rate of 21 litres per minute.

What nozzle size should be used with the WS202?

For systems operating at 200 Bar and 21LPM, a Size 065 lance nozzle is recommended.

Is the WS202 suitable for continuous industrial use?

Yes, the WS202 is designed for professional continuous-duty cleaning applications.

What speed does the WS202 operate at?

The pump operates at 1450RPM which helps reduce wear and extend service life.

Can I get service kits and spare parts for the WS202?

Yes, Flowjet Cleaning Equipment supplies valve kits, seal kits, ceramic pistons, oil seals, and replacement servicing parts for the WS202.

Is the WS202 suitable for hot water pressure washers?

Yes, the WS202 can be used on hot water systems when fitted with the correct hot water service kits such as Kit 220.

How often should the oil be changed?

It is recommended that the pump oil is replaced every 6 months minimum, especially on heavily used industrial machines.

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Order Now

Buy the genuine Interpump WS202 Pressure Washer Pump online from Flowjet Cleaning Equipment. We supply industrial pressure washer pumps, service kits, spares, accessories, and technical support throughout the UK.

For compatibility advice, servicing information, or spare parts assistance, contact our experienced team today.

Flowjet Cleaning Equipment LTD
Unit 4, Gatebeck Farm
Gatebeck, Kendal
LA9 7FP
United Kingdom

Telephone: 015395 66193
Email: sales@flowjet.co.uk