Water Heater Pop Off Valve

Open the valve at the bottom and the pressure relief valve for a minute to drain a little.

Water heater pop off valve.

My hot water heater is leaking from the pop off valve i have replaced it several times and now i have a new heater and guess what it is leaking through the pop off valve. So when there s a lot of pressure being built inside our electric water heater pressure relief valve it will eventually start leaking water outwards. This valve allows water or steam to escape from the water heater if the temperature or pressure gets too high. 1 16 of 130 results for water heater pop off valve camco 10471 10473 3 4 temperature and pressure relief valve with 4 epoxy coated probe 4 6 out of 5 stars 445.

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. 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. In the first case the valve will drain water out of the discharge pipe as explained above. Technically speaking when a water heater warms the water inside the tank it builds up quite a good amount of pressure.

First turn off the gas to the water heater or flip the breaker if it s electric. If you do try to fix it here are the basic steps involved. This prevents a water heater from exploding or turning into a missile. 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.

Close the cold water cut off valve going into the water heater. This extra amount of pressure causes the water to expand although it s a closed system that we have in electric water heaters.