Vacuum Relief Valve Water Heater Diagram

Relieves negative pressure from inside the tank.

Vacuum relief valve water heater diagram.

Replacement for the failed original valve on my marathon water heater. The vacuum relief valve is used on rheem marathon water heaters to help prevent the plastic composite tank from collapsing. Series n36 water service vacuum relief valves are used in water heater tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater tank equipment. These valves are specifically designed for tank protection.

These valves are suitable for low pressure steam and water service and are ideal for use in water heaters and. It is especially well suited for many domestic and commercial systems. The vacuum relief valve shall have an all brass body and include a protective cap. Direct replacement for rheem marathon water heaters.

These valves are specifically designed for tank protection. A watts model n36 m1 vacuum relief valve shall be installed on domestic hot water supply tanks heaters unit heaters steam kettles as indicated on plans. The vacuum relief valve shall be ansi z21 22 rated and csa certified. Rheem protech vacuum relief valves feature true oem performance.

Looks like the vacuum relief valve should be replaced every 5 7 years. The valves prevent the build up of negative pressure which can unbalance the system or damage the storage vessel. The valves prevent the buildup of negative pressure which can unbalance the system or damage the storage vessel. Luckily we discovered the original valve failing before it had a chance to flood our house.

Nowhere does the owner s manual say this. The vr20 vacuum relief valve is designed to protect hot water supply systems and pressure vessels against negative pressure. It works by preventing internal vacuum conditions that could result in burned out heaters and or collapsed storage tanks.