If the water inside the unit gets too hot usually above 210 degrees or pressure builds up too high above 150 psi the water heater can become damaged or even explore.
Water heater repair pressure relief valve.
Turn the original pressure relief valve counterclockwise to remove it using an adjustable wrench.
Open the valve at the bottom and the pressure relief valve for a minute to drain a little.
A failed thermostat can cause the element to heat constantly resulting in overheating.
Water heaters come equipped with a temperature and pressure relief valve also known as a tprv.
A water heater pressure relief valve is what prevents the levels of pressure from your water heater from getting to dangerous levels.
Close the cold water cut off valve going into the water heater.
If the water is overheating the dripping could be because the overheating tripped the valve.
If you do try to fix it here are the basic steps involved.
If at any point the temperature or pressure reaches an unsafe level the water heater triggers the relief valve to open and release water out of the tank until the temperature and pressure return to normal.
A good solution to this risk is the relief valve.
The valve is located on or near the top of the tank.
First turn off the gas to the water heater or flip the breaker if it s electric.
Shut off the circuit breakers and check the thermostats and heating elements.
Usually what causes a leak is the minerals in the water that will deposit on your valve.
This valve allows water or steam to escape from the water heater if the temperature or pressure gets.
Replace the pressure relief valve if it leaks and the water heater isn t overheating.
Tighten the valve by turning.
Part of the valve extends into the unit.
The relief valve is an important safety feature on the water heater.