Shower Vacuum Breakers provide Back flow Prevention.
Homeowners commonly use Hand Held
Shower Heads connected to the municipal water supply .Soap and cleaning chemicals in the shower have the potential for back flow of polluted or contaminated water to the municipal water supply, possibly causing a
health hazard. Shower vacuum breakers are simple, low-cost devices that should be used to help prevent back flow of water and possible pollutants or contaminants to the water supply.
Backward movement of water
is called back flow, and it can occur either by siphoning or back pressure.
Connects to Wall Supply Elbows.