HepvO is an innovative alternative to conventional water traps, which replaces ‘trapped’ water with a soft, silicone rubber membrane to create an impenetrable seal against foul sewer gasses entering a building. • HepvO will not lose its seal due to evaporation, movement, vibration or siphonage, is not prone to cracking in freezing conditions and prevents ‘gurgling’ noises in the waste pipe • Can be installed vertically or horizontally • Suitable for use on kitchen sinks, washbasins, showers and condensate lines from boilers and air conditioning units 40mm HepVO Self Seal Waste Valve