Product Description: The brass vacuum breaker protects against the flow of polluted water back into the potable water supply. Attached to sill cocks, valves, and hydrants with hose thread outlet Prevent water backflow and back-siphonage Contains a manual freeze feature to protect the valve during freezing conditions. This valve is not intended to convey water for human consumption.
★Standard size:3/4 inch thread fit most standard hose. Drain hole is able to drain the remained water in the pipe.Please keep away from the product when turning off the water, remained water will be sprayed out. ★Package include: 2 PCS Vacuum Breaker with 4 PCS extra black Silicone gasket washers and 1 tape. ★Max. operating temp. rating: 180 F/82 , Max. operating pressure rating: 125 PSI. ★Heavy Duty Brass,strong and solid,silver Stainless steel Nails.Meets ASSE 1011/CSA B64.2, Meets ANSI/NSF 61-9 Standard. ★Widely Application：Break-off screw for permanent attachment; eliminates back-siphonage into water supply. Can be used in anti-backflow valve for RV, garden spigot, outside water faucets, hose bibs, hydrants.