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Author:
ddbbp (KS)
I am getting a miniscule amount of moisture from my T&P. Its almost unnoticeable... Its literally less than an eye dropper full every 2 days.
The only thing I can think of is that the top of the discharge pipe and valve is warm/hot and the rest of the pipe is cold. Im thinking its condensation because.....
The house pressure and temp appear OK and I have a new expansion tank. Also the valve has not been "tested" either (which usually causes drippage in my experience). I also replaced the valve a few months ago when it happened then and that seemed to fix it since for a few months it didn't occur.
If you can speculate that would be great... my questions:
How much water and for how long of a duration would you see from a T&P valve in the case of overheating, pressure or a faulty valve? I am assuming that I would get significant water on temperature and still a more noticeable (more than a cup?) on pressure.
Is my condensation theory bogus since this isnt a pressurized pipe nor is their sweating on the exterior of the pipe?
Should I just forget about it and not do anything until it dumps water?
Edited 3 times.
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Author:
hj (AZ)
1. There is no way it could be condensation
2. If it opens because of temperature it will continue to run until the water cools down
3. IF it opens due to pressure it will run until the excess pressure is released.
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Author:
ddbbp (KS)
and that's more than an eye dropper worth in both case I assume? I would actually see it dripping which I have not. Is that safe to assume? and if so, what the heck is going on?
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Author:
hj (AZ)
Well, since water in not compressible, which is why you have the expansion tank, it might only take a small amount of water to increase the pressure, IF the tank in not functioning properly.
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Author:
srloren (CA)
Put a pressure gauge on a hose bib. What does your water pressure gauge tell you? You should have no more than 80 psi on your service. I set the prv to 50 to 60 if the client is ok with it. They will waste less water with a lower pressure.
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