★Standard size:3/4 inch thread fit most standard American hose. Break-off screw for permanent attachment. ★Package include: 3 PCS Vacuum Breaker , 6 PCS extra washers ,6 x Headless Hex Set screws,1 x Allen Wrench and 1 tape. ★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 Standard. ★Widely Application：Can be used in RV, garden spigot, outside water faucets, hose bibs, hydrants. Vacuum breakers are widely used in buildings, industrial water, urban water supply and other fields, playing an important role in ensuring water supply safety and preventing pollution. 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 Male hose thread outlet
Prevent water backflow and back-siphonage
Contains a manual freeze relief feature to protect the valve during freezing conditions. This valve is not intended to convey water for human consumption.


including:
3 Pack Vacuum Breaker
6 extral black washers
1 tape
6 x Headless Hex Set screws,
1 x Allen Wrench