The McAlpine VPSF-40/50 Ventapipe 40/50 Air Admittance Valve with Solvent Weld Outlet is a plumbing product used for venting waste pipes in a building's drainage system. The valve is designed to be installed on 1.25", 1.5" or 2" BS EN 1329-1:2000 solvent weld waste pipes. It works by allowing air to enter the waste pipe system, which helps to prevent the siphoning of water from trap seals and the buildup of negative pressure in the pipes. The valve features a solvent weld outlet, which means that it can be connected to the waste pipe using solvent cement. The valve also has a compact design and can be installed in tight spaces where traditional vent pipes cannot be installed. Overall, the McAlpine VPSF-40/50 Ventapipe 40/50 Air Admittance Valve with Solvent Weld Outlet is a reliable and easy-to-install solution for venting waste pipes in residential and commercial buildings. Fits 1.25", 1.5" and 2" waste pipe Solvent weld Outlet A1 rated Air flow capacity of 9 l/s For full information on Air Admittance Valves please see below

It is designed and manufactured by McAlpine, a UK-based company that specializes in plumbing products.

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