Large Rectangular HDPE Flap Valve
When required we are able to manufacture headwalls to site specific dimensions and specifications. We supplied a number of very large rectangular flap valves as pictured.
Most of our flap valves are manufactured in HDPE with stainless steel grade 316L reinforcements, hinges and fixings. Our flap valves typically have a design life of 50 years when subject to 1Mwc constant head of water. Our standard specification is to 5MWc for 72 hours.
Once we receive an order for a bespoke flap valve we will produce a drawing for approval. This enables site to check that the valve ordered will fit the available space. We are usually able to tweak our designs as necessary and are happy to work with contractors and engineers to find the best solution to a problem