Aquatic Control Engineering

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HDPE Flap Valves

Flap Valves

KWT flap valves are available in a number of styles and can be fitted in a number of ways making them very flexible in terms of application. As well as a flexible range of standard designs we can also develop and manufacture bespoke flap valves to suit unique and special requirements.

Flap valves are a very traditional method of preventing back flow in pipelines, culverts and other applications to prevent flooding. The KWT models are manufactured using modern materials and the latest manufacturing techniques to ensure the very best products are achieved in the most efficient manner. Due to the unique lightweight properties of the HDPE that is used to manufacture the flap valves, they are very easy to install in comparison to cast iron flap valves

The most popular wall mounted type we offer are available from ø100mm to ø1500mm as standard with all sizes up to ø900mm kept in stock in the UK for immediate dispatch.

All the flap valves produced by KWT are rated to withstand water pressures of 1.25MwC constant and 5MwC short term, however should you have a requirement for flap valves to withstand higher pressures these can be manufactured on request.

Click here to see the Flap valve range

All the KWT flap valves benefit from the following unique properties:

  • Easy to install - No grouting required.
  • Light weight due to to the use of HDPE.
  • Virtually maintenance free.
  • Ultra Violet and impact resistant.
  • Standard sizes available for immediate dispatch.
  • Supplied complete with all seals and stainless steel fixings.