Water Heater Vacuum Relief Valve Installation

See item 2 in exploded view.

Water heater vacuum relief valve installation.

The vacuum relief valve shall have an all brass body and include a protective cap. These valves are suitable for low pressure steam and water service and are ideal for use in water heaters and. It needs to be the same size as the outlet of the relief valve and co to about 6 inches from the floor without any possible way of. It may be in the box or you may need to buy your own.

Do not reuse the old valve. 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. In order to gain occupancy an inspector informed me that i need to install a vacuum relief valve on the cold water supply line for my hot water tank. Many regions require the t p valve to lead outside for added safety and some may even require two valves for redundancy.

If your water heater did not come with a new t p relief valve pre installed simply twist in the new valve now. 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. Before doing any work on a water heater you should always turn off the circuit breaker or set the gas control valve to the pilot setting.

Leaving the power or gas on when the tank has been partially drained can cause serious damages or injuries. Open t p valve to help relieve vacuum in tank. Drain tank by fully opening drain valve. Directly above the vertical line that feeds the tank my hot water tank is under the.

T p valve the temperature and pressure relief valve is an important safety device which goes off when your tank exceeds 210 degrees fahrenheit or 150 psi. 3 install or locate this water heater only in accordance with the provided installation. 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. Turn off the cold water inlet valve.

Prepare the water heater for repairs. They have a brass body construction with npt male inlet connection and a protective cap. The t p valve automatically opens if the temperature or pressure becomes too high for the tank.