Air Admittance Valves .  110mm / 82mm ( EXTERNAL WHITE COLOUR) buy direct from the manufacturer 

Here are my 110mm / 82mm air admittance valves,  these valves are the best and easiest to fit. They can be either a simple push fit straight onto 110mm soil pipe or solvent glued onto 82mm soil pipe.  They are manufactured to the highest BS EN 12380 and to CE standards, they are available in four different colours.  Standard Grey / Olive Grey / Black / White. Please specify what colour you want when ordering.  I designed a good percentage of air admittance valves available,  including the Hunter Valve,  the FloPlast Valve both their old valve and their current valve,  the Terrain Valve and the old Polypipe Valve.  So I believe my Air Admittance Valve to be the best available.

INTERNATIONAL POSTAGE OFFERED,  PLEASE ASK.