The McAlpine VP2 Ventapipe 25 Air Admittance Valve is a plumbing device that is designed to allow air to enter the drainage system, while preventing foul odors from escaping into the building. This valve features a 1.5" universal outlet, which means that it can be connected to a variety of different pipe sizes and materials. It is suitable for use with waste pipes from sinks, basins, baths, and other similar fixtures. The VP2 Ventapipe 25 is manufactured by McAlpine, a well-known and respected brand in the plumbing industry. It is designed to meet the highest standards of quality and reliability, and is backed by a manufacturer's guarantee for added peace of mind. Overall, if you are in need of an air admittance valve for your plumbing system, the McAlpine VP2 Ventapipe 25 with a 1.5" universal outlet is a great choice to consider. It is easy to install, compatible with a variety of pipe sizes and materials, and manufactured by a trusted brand in the industry. 1.5" Universal Outlet A1 rated Air flow capacity of 3 l/s For full information on Air Admittance Valves please see below McAlpine VP2 Grey Ventapipe 25 Air Admittance Valve with 1.5" Universal Outlet