The 110mm Black Push-Fit Air Admittance Valve allows a soil stack fitted with an external air admittance valve to terminate within three metres of a window opening. This allows the pipe to terminate at the same height as if it were installed internally i.e. 200mm minimum above the highest wet entry point to the soil vent pipe. The use of an external air admittance valve eliminates the need for the soil stack to extend over the roof line saving on materials and time.

Brand Name	Floplast