General description The McAlpine WM3V is a plumbing trap specifically designed for use with standpipe waste systems. It features an anti-syphon (Silentrap) design that prevents the backflow of wastewater and airlocks in the system. With a 75mm water seal, it effectively blocks foul odours from entering the room, while its 1.5" multifit outlet allows for easy connection to standard pipework. The WM3V connects to a vertical standpipe waste system, ensuring a reliable and watertight installation. Technical specifications Water seal: 75mm Outlet size: 1.5" multifit Installation Designed to be installed on top of a vertical standpipe waste system Connected to the standpipe using a rubber seal for a watertight connection Usage Prevents backflow of wastewater Prevents airlocks and release of unpleasant odours