What Is an Anti-Siphon Faucet?


The installation of an anti-siphon faucet eliminates the risk of tainted water being syphoned back into the main water supply. In the event that the water pressure suddenly decreases, there is a possibility that water may run backwards and syphon into open pipes or fixtures (see Reference 1 below).


In areas where a back-flow of water might potentially be hazardous to a person’s health, anti-siphon faucets should be installed. Faucets designed to prevent water from syphoning are often used in sprinkler systems, toilets, and outdoor garden hose connections (see Reference 4 below).


A rubber seal is included in the design of an anti-siphon faucet, which means that water can only flow in one direction (see Reference 2 below).


Outside of dwellings, anti-siphon faucets are very necessary to have installed. Because chemicals are used on lawns, plants, and in swimming pools, it is essential that safety measures be put into place to prevent polluted water from entering the water supply that is used for drinking, preparing food, and bathing.


You can recognise an anti-siphon valve by either checking for the UPC shield on it or searching for the words “anti-siphon” on it. Additionally, an opening for air should be clearly visible at the very top of the valve (see Reference 4 below).


For residential usage with a hose spray, the ASSE 1025 standard of the federal housing code mandates the installation of anti-siphon faucets (see Reference 3 below).