WaStop Stainless Steel series can be used in sewer and storm/surface water applications as well as for stopping odour escaping from combined sewers. The stainless steel series is a complete range from DN 100mm (NPS 4″) to DN 1800mm (NPS 72″). The WaStop Stainless range fits inside the existing pipe. For more information regarding installation please see below.
How it works
Flow in the right direction causes a pressure build- up against the membrane to open just enough to allow the liquid to flow unhindered.
If the flow is reversed the membrane fills with water or gas and acts as a stopper, blocking all back flow.