Wastop valves are inline backflow and flood prevention valves. WaStop inline non return valves (NRV) are made up of either a stainless steel grade 304 or 316 incorporating a cone-shaped chloroprene membrane. The membrane allows flow to pass in the desired direction but when backflow occurs the membrane fills out and seals the pipe.

WaStops do not rely on gravity to close the membrane and do not need to be fitted against a vertical headwall. This means that it can be installed in any plane or inline between two pipes. The WaStop is available in a number of standard sizes suitable for up to 8MwC. Special sizes and pressures are available on request.

We can also provide stainless steel Wastops flanged at one or both ends for factory fitting to precast headwalls, onto tidal or other outfall walls or inline with existing pipework.

If you require any assistance or more information please contact us by phone on 01603 488700 or by email sales@althon.co.uk

WaStop SS900mm

WaStop SS900mm

900mm Stainless Steel WaStop Valve

WaStop SS100mm

WaStop SS100mm

100mm Stainless Steel WaStop Valve

WaStop SS110mm

WaStop SS110mm

110mm Stainless Steel WaStop Valve

WaStop SS125mm

WaStop SS125mm

125mm Stainless Steel WaStop Valve

WaStop SS150mm

WaStop SS150mm

150mm Stainless Steel WaStop Valve

WaStop SS200mm

WaStop SS200mm

200mm Stainless Steel WaStop Valve

WaStop SS225mm

WaStop SS225mm

225mm Stainless Steel WaStop Valve

WaStop SS250mm

WaStop SS250mm

250mm Stainless Steel WaStop Valve

WaStop SS300mm

WaStop SS300mm

300mm Stainless Steel WaStop Valve

WaStop SS350mm

WaStop SS350mm

350mm Stainless Steel WaStop Valve

WaStop SS400mm

WaStop SS400mm

400mm Stainless Steel WaStop Valve

WaStop SS450mm

WaStop SS450mm

450mm Stainless Steel WaStop Valve

WaStop SS500mm

WaStop SS500mm

500mm Stainless Steel WaStop Valve

WaStop SS600mm

WaStop SS600mm

600mm Stainless Steel WaStop Valve

WaStop SS700mm

WaStop SS700mm

700mm Stainless Steel WaStop Valve

WaStop SS800mm

WaStop SS800mm

800mm Stainless Steel WaStop Valve

WaStop SS1000mm

WaStop SS1000mm

1000mm Stainless Steel WaStop Valve

WaStop SS1200mm

WaStop SS1200mm

1200mm Stainless Steel WaStop Valve

WaStop SS1400mm

WaStop SS1400mm

1400mm Stainless Steel WaStop Valve

WaStop SS1500mm

WaStop SS1500mm

1500mm Stainless Steel WaStop Valve