A passive flood defence solution to prevent backflow of sewage through the property.
As it is a passive measure, once installed, you have peace of mind of optimal protection to the specific entry points which the non-return valve is installed to.
There are different sizes available to protect both larger and smaller waste outlets.
10mm Non-Return Valve
A key flood defence measure installed to horizontal pipes in manholes, to prevent backflow of water up through the toilet. The non-return valve closes automatically when backflow occurs.
32mm / 42mm / 50mm Backwater Valves
Backwater non-return valves are simple flood defence devices used to prevent backflow through smaller waste outlets such as kitchen sinks, showers and dishwasher machines.