American Standard, 1660400.295, Vacuum Breaker, Standard, Universal Collection, For Use With: Personal Shower, Specifications: 1/2 in NPT, Brass, Satin Nickel, 1.19 in W x 1.19 in L Dimensions, 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 handheld shower. Prevents back flow of water into supply piping.