50HA-CH Vacuum Breaker - Chrome

50HA Vacuum Breaker - Chrome UPGRADE to the Nidel® 50HA to protect from spray-back! Standard on Woodford Models  25, 27, 30, C22 and B22 with 1 1/8" - 18 special threads X 3/4" 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.