Save on antifreeze when you winterize with the easily installed Camco RV Quick Turn RV Permanent By-Pass Kit. Made with kink-resistant nylon reinforced hose, sturdy, brass backflow preventer and 100% shut-off valve to let you bypass the water heater with a single turn. Patented design. Easily installed RV water heater by pass kit Easily installed RV water heater by pass kit Shut off valve lets you by pass the RV water heater with a single turn Save anti-freeze when winterizing by bypassing the water heater Patented design