Hose-Thread-Backflow-Preventer

3/4" FHT x 3/4" MHT - backflow preventer prevents dirt or fertilizer from re-entering the water supply. Install after the faucet or timer. Special Note: During normal operation the backflow preventer will appear to "leak" after the system or timer is turned off. This is normal as the backflow preventer is allowing water to drain from the system without entering the water supply. The amount of water drained will be equal to the water capacity of the drip system.