Either the valve was triggered to open because of excessive temperature or pressure or the valve itself is faulty.
Water heater pop off valve leaking.
These valves may look identical but they re set to go off at 30 psi not 150 psi.
If you do try to fix it here are the basic steps involved.
If a new tprv is properly installed and it still leaks you probably have a pressure problem.
There is the off chance the gauge doesn t work.
These valves may look identical but they re set to go off at 30 psi.
Most hardware stores sell a 0 200 psi gauge that screws onto any hose thread like the drain of the water heater for around 15.
In the first case the valve will drain water out of the discharge pipe as explained above.
Close the cold water cut off valve going into the water heater.
Open the valve at the bottom and the pressure relief valve for a minute to drain a little.
Your water heater s relief valve can start leaking for one of two reasons.
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.
If it s an electric water heater.
Turn off the power to the leaking water heater.
If it s a gas water heater it will have a dial or an on off switch near the spot where the gas line connects.
I imagine it will and you ll know for certain why the relief valve is leaking yours larry ps.
First turn off the gas to the water heater or flip the breaker if it s electric.
Watch the gauge and see if while heating the pressure rises well above 45 psi.
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.