The Woodford RK-27 includes everything to repair a Model 25 and 27 including a replacement/upgrade Double-Check Backflow Preventer (Vacuum Breaker): A 50HA Backflow Preventer! No Backspray!
Have you ever turned off your faucet with the hose connected and had a spray-back of water? UPGRADE the 34H series on your Model 25 to a 50HA to protect from spray-back! The Woodford Model 50 Auto-Drain Double Check Backflow Preventer is the first ASSE 1052 Approved automatic draining double-check backflow preventer. When a hose is removed from a Model 50 equipped wall faucet, two linked but independent checks move as one to open a path through the valve allowing water to drain completely and prevent freezing