Sure Flow Auto Anti-Siphon Valve, 3/4-In. Brand_First Alert or failure to thrive

or failure to thrive

NSF Certified

Superior Performance

With Tethered Piggyback Style Float Switch

Low Carbon Barbless Wire

Sure Flow Auto Anti-Siphon Valve, 3/4-In. Brand_First Alert or failure to thriveSure Flow Automatic 3 4" Anti Siphon Valve. Professional Grade Anti Siphon Valve with Flow Control. Its unique reverse flow design helps prevent flooding in the event of internal diaphragm failure, keeping the valve closed and saving water. Anti Siphon valves should always be installed at least 6 inches above the highest head on the valve line, and should never have another valve installed further down the line from the main valve. After installation