
Heavy duty solid brass made it durable. 5 PCS 3/4-inch Anti siphon vacuum breakers backflow preventer with tap and washers Vacuum breaker prevent outsider debris from entering the drinking water, prevent water from freezing and prevent anti-siphoning. Max. operating temp. rating: 180 F/82 C, Max. operating pressure rating: 125 PSI. Meets ASSE 1011/CSA B64.2, Meets ANSI/NSF 61-9 Anti-backflow valve for most of standard hose and end valves including hose bibs, sillcocks, RV, garden spigot, outside water faucets, hydrants.

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