SUNGATOR 6-Pack Vacuum Breakers, 3/4'' Anti Siphon Valve Outside Faucet, 3/4 Inch GHT Hose Bib Backflow Preventer for Outdoor Faucet, Brass 3/4'' Hose Bib Anti-Backflow Vacuum Breakers for Garden Hose

【PACKAGE INCLUDES】: 3/4 Inch GHT Vacuum Breaker × 6, washers × 6, tape (About 350"" long) × 1, plastic box × 1. ATTENTION: NOT FOR FINE THREAD. 【ADVANCED FUNCTION】: The hose bib vacuum breaker is designed to prevent fluid backflow into potable water systems. With a break-off screw for permanent attachment and a drain hole for draining remaining water, the backflow preventer efficiently prevents water from freezing and siphoning.. 【ATTENTION】: Reaching a certain water pressure, the drain hole is able to drain the remained water in the pipe. Please keep away from the vacuum breaker when turning off the water, remained water will be sprayed out.. 【HIGH QUALITY】: Crafted from heavy-duty brass, the anti-siphon valve ensuring corrosion resistance and a longer service life. Meets ASSE 1011/CSA B64.2, ANSI/NSF 61-9. Max operating pressure is 125 psi; max operating temperature is 180°F/82°C.. 【GREAT COMPATIBILITY】: 3/4'' garden hose anti-siphon valve is widely used for outside faucet, hose bibs, sillcocks, RV, garden spigot, outside water faucets, and hydrants with standard hose threads.