Water Heater Pop Off Valve Drain Line

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. The second reason a water heater relief valve leaks is the water has gotten too hot if the temperature of the water in the water heater reaches above 210 degrees f the relief valve will leak or even blow off this is why the outlet of the relief valve must be piped to about 6 inches from the ground you would not want to get a blast of 210 degree f water in the face. The two most common reasons for a hot water heater relief valve leaking are excessive temperature or excessive pressure.

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The valve should be connected to a discharge pipe also called a drain line that runs down the length of the water heater tank.

Water heater pop off valve drain line.

It s rare that a hot water heater re. Use a flathead screwdriver to. If you don t have a floor drain drain the water into a sump pit. Open the valve at the bottom and the pressure relief valve for a minute to drain a little water out of the tank and relieve the pressure.

Terminate with an indirect connection above a floor drain sump or other safe location. 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. If the water heater is within 6. 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.

Be piped so that it is sloped away from the valve. Temperature and pressure relief valves shall be installed so that the sensing element of the valve extends into the heater tank and monitors the. First turn off the gas to the water heater or flip the breaker if it s electric. First you must drain the water heater by attaching a garden hose to the drain valve and then running the other end of the hose to a floor drain or a shower drain.

Close the cold water cut off valve going into the water heater. This pipe is responsible for routing hot water released from the tpr to a proper discharge location. Follow local building codes when deciding where to drain any water that drains out of the tank. Have an air break not smaller than the diameter of the discharge pipe but with a minimum of 25mm 1 or a maximum of 300mm 12 have no threads at its outlet.

The temperature pressure relief valve or tpr valve on any heated appliance that contains water such as a heating boiler hot water tank water heater water cylinder must have a drain line or discharge tube properly installed routed and made of proper materials.

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