Hourleey Vacuum Breaker, Solid Brass Hose Bib Backflow Preventer, 3/4 Inch.

Function: Hourleey faucet vacuum breaker can help you prevent foreign matter from entering the drinking water, prevent water from freezing and prevent anti-siphoning.

Brass: Heavy duty solid brass made it durable.

Standard size: 3/4 inch thread fit most standard American hose.

Widely use: Can be used in RV, garden spigot, outside water faucets, hose bibs, hydrants. Protect you from drinking dirty water remaining in the hose