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.

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. I have had 4 different plumbers check this out they put a new regulator at the water meter turned the temp of the water down replaced every thing in the old heater. Technically speaking when a water heater warms the water inside the tank it builds up quite a good amount of pressure. 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.

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. In the first case the valve will drain water out of the discharge pipe as explained above. First turn off the gas to the water heater or flip the breaker if it s electric. This extra amount of pressure causes the water to expand although it s a closed system that we have in electric water heaters.

Your water heater s relief valve can start leaking for one of two reasons. Close the cold water cut off valve going into the water heater. This prevents a water heater from exploding or turning into a missile. 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. Either the valve was triggered to open because of excessive temperature or pressure or the valve itself is faulty.