2181-Non-Return-Valve-Tap-Connector-1-2-5-8in-BSP-Hozelock-2181P9000-p-This-Hozelock-2181-Non-Return-outdoor-tap-connector-is-an-all-plastic-double-check-valve-which-connects-to-outside-taps-and-prevents-backflow-into-the-mains-water-supply-p-p-It-is-suitable-for-all-1-2-inch-3-4-inch-and-5-8-inch-BSP-taps-p-Hozelock-2181P9000-2181-Non-Return-Valve-Tap-Connector-1-2-5-8in-BSP