Reflux Valves - Sewerage


This WaterMark Technical Specification sets out requirements for plastics-bodied reflux valves manufactured from PVC-U (Polyvinyl Chloride Unplasticised) and ABS (Acrylonitrile Butadiene Styrene), that are intended to prevent the reversal of waste water flow by means of a resilient-seated disc/flap or other mechanism. It covers nominal sizes DN 100 to DN 600.

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