Standard on Woodford model 25 and 65 with 1 1/8" - 18 special threads X 3/4" hose threads single-check vacuum breaker is designed to protect hose connections from contamination in freezing conditions. Uses include laundry tubs utility sinks boiler room and outside hose bibbs.
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Item #: 50HA-BR
50HA-BR Vacuum Breaker - Brass
Nidel® 50HA protects from spray-back! Standard on Woodford Models C22 B22 25 27 and 30 with 1 1/8-in - 18 special threads X 3/4-in hose threads.
The first ASSE 1052 Approved automatic draining high-flow double-check backflow preventer. When a hose is removed from a Model 50 equipped wall faucet or yard hydrant two linked but independent check valves automatically move as one to open a path through the valve allowing water to drain completely and prevent freezing.