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he Express Air Admittance Valves are designed to allow the free entry of air into the sanitary pipework system without the escape of foul gases into the building. When installed into sanitary pipework systems conforming to BS EN 12056:2000, the Express Air Admittance Valve not only prevents the loss of water from trap seals due to induced siphonage but also has the added advantage of providing an early warning indicator to a potential drainage blockage. The AF110 Push-Fit Air Admittance Valve may also be used as a secondary rodding point to remove such blockages. All Valves should be stored in an upright position. Approved Document H of the Building Regulations only permits Air Admittance Valves that conform to BS EN 12380.
External Air Admittance Valves
The Express External Air Admittance Valve is the world’s first and complements the array of internal air admittance valves available. The external version eliminates the need for the installer to work and handle pipe above the roof line, therefore making it easier to comply to working at height and manual handling regulations.
Whilst every effort has been made to ensure the prices within this website are correct, prices charged will be those ruling at date of despatch. All prices quoted are inclusive of VAT.
Errors & Omissions: Although care has been taken to ensure all information and images on this website are accurate, William Wilson takes no responsibility for errors, omissions and product technical changes within the content of this website.
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