SUNGATOR 2-Pack Vacuum Breaker Set, 3/4 Inch Anti-Siphon Hose Bib Valve for Garden Spigot, RV, Solid Brass Anti-Backflow Valve with Tape auspowers_batchtwo Due to the unique key

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SUNGATOR 2-Pack Vacuum Breaker Set, 3/4 Inch Anti-Siphon Hose Bib Valve for Garden Spigot, RV, Solid Brass Anti-Backflow Valve with Tape auspowers_batchtwo Due to the unique keySUNGATOR 2 Pack Vacuum Breaker Set, 3 4 Inch Anti Siphon Hose Bib Valve for Garden Spigot, RV, Solid Brass Anti Backflow Valve with Tape Product Features ADVANCED FUNCTION: Break off screw for permanent attachment; eliminates back siphonage into water supply; anti backflow valve for RV, garden spigot, outside water faucets, hose bibs, hydrants. DRAIN HOLE: Drain hole is able to drain the remained water in the pipe. WARNING : Please keep away from the