Hello everyone, newbie here but long time camper owner...
My 27 year old Suburban water heater finally sprung a leak in the tank so had to replace it, bought a brand new identical one mainly for easier install. Problem is the T&P (pop off) valve on the new one leaks during heating cycle, not the threads but through the valve itself. I tried a replacement valve but it does the same thing, it's about a drop every two seconds for at least 15 minutes. Seems like when it gets up to temp and the flame goes out it stops dripping....
These valves are rated 150psi and 210*, I tested the water temp at 142* so not near the 210*. I haven't figured out how to test the pressure but I would think if it's 150psi it would blow my rv lines?
Surprisingly the manual has a section for 'water weeping' through the valve, it says to shut off the water supply then open the T&P valve til it stops flowing to create a bigger air pocket to allow for pressure. I've done that numerous times but it still drips, I'm at a loss. Do all of these new water heaters leak through the valve like this? I just can't believe they do, Help and Thanks