General description The McAlpine VP2W Ventapipe 25 Air Admittance Valve is a plumbing device designed to allow air to enter the drainage system while preventing foul odors from escaping into the building. It features a 1.5" universal outlet, making it compatible with various pipe sizes and materials. This valve is suitable for use with waste pipes from sinks, basins, baths, and other similar fixtures. The white finish helps it blend in with white PVC pipes and fittings, making it aesthetically pleasing in visible installations. Technical specifications Outlet size: 1.5" Air flow capacity: 3 l/s Rating: A1 Other information Manufactured by McAlpine, a respected brand in the plumbing industry Backed by a manufacturer's guarantee