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Allows the free entry of air into the sanitary pipework system without the foul gases escaping into the building. Avoids the need to penetrate outer roof shell. It is recommended that air admittance valves are not used externally as environmental deb
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GBP20.87
More Information
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Universal valve to fit standard 32, 40 and 50mm solvent weld waste pipe.
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GBP11.59
More Information
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Allows the free entry of air into the sanitary pipework system without the foul gases escaping into the building. Avoids the need to penetrate outer roof shell. It is recommended that air admittance valves are not used externally as environmental deb
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GBP20.87
More Information
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