American Standard 1660400.002 In-Line Vacuum Breaker, For Use With Flowise® Commercial Shower System, 5-Function Hand Shower, 1/2 in NPT, Polished Chrome, Import

American Standard In-Line Vacuum Breaker, For Use With: Flowise® Commercial Shower System, 5-Function Hand Shower, 1/2 in NPT, Polished Chrome, Import

To prevent water from a handheld personal shower from flowing back into the clean water supply, simply install an in-line vacuum breaker between your wall supply and flexible shower hose. Installs between any wall supply and flexible hose on hand-held shower. Prevents back flow of water into supply piping (May be required by code in some states).