ProLine 1/2 In. SWT x 1/2 In. MIP x 8 In. Anti-Siphon Frost Free Wall Hydrant

Prevents outside faucet freezing and protects against back siphoning. A built-in backflow preventer checks siphoning back into the water supply. The sill cock drains automatically upon water shut-off if the hose is removed or open. 1/2″ nominal copper sweat or 1/2″ MIP. Import.