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Maintain and purchase high-pressure units and tools at KOKS Group

Doornbos integrated into KOKS Group for sales & service of high-pressure cleaners and accessories

Since early 2025, the sales, maintenance and inspection activities of Doornbos Equipment have been integrated to KOKS After Sales. The same team and the same service, but now under the flag of KOKS Group. Want to know more? Read on: 

New name

KOKS After Sales and AQ-Rent

Since the integration, sales, maintenance and inspection activities have continued under the name of KOKS After Sales and rental activities under the flag of AQ-Rent. Together with approximately 50 new colleagues in the Netherlands and England, we are joining forces to provide the best quality and service. 

This step offers advantages such as:  

  • An expansion of the product range with brands such as Hammelmann, KÄRCHER, TST Sweden, Parker Polyflex and KOKS. 
  • Greater geographical coverage (Netherlands, Belgium, UK) 
  • Improved joint service
  • Entry into the maritime and offshore sector  

Looking to buy industrial high-pressure cleaners from 100 up to 4,000 bar?

For all your industrial cleaning jobs, KOKS offers high-quality high-pressure cleaners from Hammelmann, ranging in working pressure from 100 to 4,000 bar. These high-pressure cleaners are suitable for: 

  • Industrial cleaning;  
  • Tank cleaning;  
  • Facade cleaning;  
  • Floor cleaning;  
  • Paint and rust removal; 
  • Concrete cleaning and cutting (hydrodemolition). 

With Hammelmann's quality and KOKS's service, you are assured of reliable equipment and expert advice.

High-pressure spray guns, spray nozzles, dirt blasters and other accessories up to 4,000 bar

KOKS offers a wide range of high-pressure accessories and tools up to 4,000 bar, including: 

  • High-pressure hoses; 
  • Tank wash heads; 
  • Dirt blasters; 
  • Spray guns;  
  • Foot pedals; 
  • Pressure control valves; 
  • Reels; 
  • Spray heads and nozzles. 


All tools are suitable for heavy industrial use and can be perfectly matched to your high-pressure cleaner for maximum performance, efficiency and safety. 

 

Hammelmann high-pressure pumps

KOKS is the only official Hammelmann high-pressure pump dealer in the Netherlands. In 2025, the dealerships for Belgium and the United Kingdom were added. This enables us to provide our customers with high-quality Hammelmann plunger pumps with a working pressure up to 4,000 bar. These pumps have been used worldwide for heavy industrial and commercial cleaning applications for over 70 years. 

Whether you are purchasing a Hammelmann high-pressure pump to replace your current pump or buying your first plunger pump, good advice is extremely important. Feel free to view the range of Hammelmann pumps online, but don't hesitate to contact us with any questions or to receive tailored advice! 

 

Other cleaning solutions: temporary, long-term or permanent?

Renting from AQ-Rent

Would you rather not invest in your own high-pressure equipment, but still want to get started right away with high-quality high-pressure cleaners or other industrial cleaning machines? Then read more about renting from AQ-Rent. 

Leasing at AQ-Rent

No large initial investment, but immediate access to your own new industrial high-pressure cleaner or other industrial cleaning machines? Then read more about leasing at AQ-Rent. 

Used equipment at AQ-Used

Looking for immediate access to your own industrial cleaning machine, without the cost of purchasing new? Discover the range of pre-owned equipment at AQ-Used. Each unit is thoroughly inspected, properly maintained, and comes with a complete maintenance history for full transparency and peace of mind.

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