Wavin Osma Self Sealing Waste Valve
Where you need to prevent foul sewer gases from entering a building, HepᵥO can be used as an alternative to conventional water traps. As it doesn’t rely on trapped water to create a seal, HepvO can't fail due to evaporation, movement or siphonage
Videos
Osma HepᵥO - The world's best selling waterless trap
A quick introduction to HepᵥO
Waterless Trap System Overview - OSMA HepᵥO Soil & Waste
An overview of the unique OSMA HepᵥO waterless trap. It won’t lose its seals due to siphonage, evaporation, leaking or movement.
Installation Under a Sink
How to install an HepᵥO valve under a sink where space is at a premium
Installing HepᵥO for a Bath Waste
How to install HepᵥO Under a Sink Where Space is at a Premium