Hot Water Heater Relief Valve Pipe

The relief valve on your water heater has a pipe attached.

Hot water heater relief valve pipe.

Most residential water heaters have a 3 4 threaded opening for the discharge pipe. The pipe itself needs to be either copper cpvc or galvanized water piping. Instead it is attached with a discharge pipe link with hot water heater. Place a bucket under the discharge pipe connected to the valve to collect any water and open the t p valve.

Water heaters come equipped with a temperature and pressure relief valve also known as a tprv. You may have an issues with the hot water coming out of overflow pipe. In most of the disasters caused by hot water heater pipe leaking from the top the trp valve is involved. The valve should be connected to a discharge pipe also called a drain line that runs down the length of the water heater tank.

But if the termination of the piping is not readily visible such as if it is located under the house the water will continue to drain until the homeowner gets an amazing electric or gas bill and goes searching for the reason. This valve allows water or steam to escape from the water heater if the temperature or pressure gets. When no water exits the discharge pipe from the t p valve close the drain valve and remove the garden hose. This temperature pressure relief valve is not directly attach with the hot water pressure heater.

By code you have to run the same size as the opening which means the pipe needs to be 3 4 in diameter.