Hot Water Heater Pressure Relief Valve Extension Pipe

Temperature and pressure relief valves shall be installed so that the sensing element of the valve extends into the heater tank and monitors the temperature in the top 6 inches of the heater or tank.

Hot water heater pressure relief valve extension pipe.

If the water heater thermostat fails to turn off at its temperature setting and continues to heat the water indefinitely the tpr valve will open and let the overheated water out. All pressurized non storage type water heaters shall be provided with a pressure relief valve installed at the hot water outlet with no shut off valve between the heater and the relief valve. Heating element pressure relief valve rheem water heater accessories gas valve water heater accessories treater. The p1000axl 150c pressure relief valve is set at the p1000axl 150c pressure relief valve is set at 150 psi and utilized on water heating storage vessels for protection against over temperature or excessive pressure not for steam service.

I always advise the client that the pipe should be copper and should terminate about 6 inches from the floor. The pressure relief valve extension is plastic and has a couple of elbows leading it to a drain. 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.