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ACE KRK - Model HDPE -Flap Valves
A flap valve is a type of non-return device for water or sewerage. The purpose of a flap valve is to ensure water can pass through the valve in one direction only. Flap valves operate by water flowing through a pipe or culvert and pushing the swinging door open. When the water level on the downstream side of the flap valve is higher than in the pipe or culvert it presses the swinging, door shut and prevents the water traveling back through the system.
ACE were the first in the UK to provide stainless steel and HDPE non-return valves (NRV’s). Alternatives to the outdated cast iron versions used in the past. It has been ACE’s philosophy to use modern materials and up to date technologies. As a result, reducing maintenance and increase asset life. This has enabled us to forge our strong position which we hold in the UK market today.
ACE regularly design bespoke non return valves for particular environments, including the use of alternative systems such as the WaStop. Projects such as the Charvill and Teddington sites can be found in our Projects section.
As some outfalls require reliable protection from flooding, but in doing so create a barrier to fish migration, ACE offer a number of fish friendly flap valves, and are more than happy to discuss your requirements to provide a suitable solution- please contact us for more details.
If fitted to a pumped outfall, or to a sea outfall, more heavy duty flap valves are also available, so please contact ACE if you have requirement in a more aggressive environment, and we will be happy to help.
Although ACE stock a wide variety of sizes of KRK flapvalve for quick dispatch (100-800mm), our flapvalves can be customised to suit specific requirements, either to adhere to particular specifications, or to save complicated construction, or modification to existing structures.
Since introduction of the HDPE KRK Flap valve range, the material has become synonymous with high quality, reliable flood defences, offering extremely good value for money over it’s life- it’s not just any “plastic” valve!