WaStop Residential Non Return Valve offers complete protection against sewage backflow, odours and small animals from moving through your domestic water supply system. It is extremely high quality, very durable and virtually maintenance free with no moving parts.
The innovative technology features a unique cone shaped membrane which remains tightly sealed until a build up of water pressure pops the membrane open; this allows a pulsating flow through the valve, creating a self-cleansing/lubricating effect and an extremely low risk of blockages.
The WaStop technology has been proven to protect communities and have been used by the likes of Anglian Water,
Northumbrian Water, Wessex Water, Thames Water, Welsh Water, Internal Drainage Board and United Utilities. It is now available in a PVC model for the residential market.