Anti Siphon Valve

Anti-Siphon Valves – These small devices fit in the palm of your hand.   They are meant to be attached to the end of each hose bib around the exterior of the home.  The anti siphon valve goes in between the hose bib and any attached hoses to break the vacuum lock and prevent water from being siphoned from the hose in the event of a supply line clog.