Air Admittance Valve Or Anti Syphon Valve
For Allowing Air In But Not Out of Soil Pipework
Push-Fit -Durable Quality PVC
Fast fit with no tools required
The anti syphon valve when fitted allows air to pass into the soil stack / pipe but not out.
This prevents the common problem of water being sucked from toilet pans and waste traps when waste is flushed away.
Other benefits include: No smells entering property, Waste is not held back due to suction effect, The one way valve prevents drain smells.
*Due to supplier stock changes unit supplied may In future differ slightly from item shown Use: Soil waste i.e Sewerage from toilets, kitchens etc or for soil stack vent pipework
This Large 110 mm model is usually used to correct problems from a Toilet or an entire drain branch with multiple Inlets like a WC and Basin.
You can also Install a local 40 or 50 mm Valve to a Basin, Sink or near an appliance that uses 40 or 50 mm pipe work.