Woodford 1/2" FSWT Type K, L, or M Copper x 3/4" MSWT Type M Copper x 4" L Anti-Siphon Wall Hydrant

The Woodford Model 27 wall faucet drains as handle is shut off, even if the hose is attached. Model 27 includes the Nidel 50HA-BR double-check backflow preventer