Prevents a backflow of contaminated water into the mains water supply. Features & Benefits • Made from the highest quality materials for a long leak free life • Suitable for all 1/2", 3/4" BSP taps • Prevents a backflow of contaminated water Specifications • Diameter: 21/26.5mm • Screw Thread: 1/2" (21mm), 3/4" (26.5mm)
