Question about Water Heaters
Our Rheemglas Fury DV (model #21DV50) started leaking from the side pipe. It looks like it is an overflow pipe, but I didn't notice it ever leaking before. Is this normal?
I don't know if you have resolved your issue by changing the T&P relief valve. However, if you have replaced it and it appears to have resolved the problem ... it will most likely be only a temporary resolve. And what has happened, it that the water that was being relieved via the T&P valve is now unknowingly leaking / being relieved by a toilet or some other means.
The reason of the leak in the first place is that the most likely the water purveyor has recently installed a DCV (dual check valve) at or within the water meter location. Not knowing where you live, but we are in NC and these DVC's are being installed all over the country.
Basically, your home's plumbing system used to be an "open system" and not it is a "closed system". In earlier times, when the water heater cycled it heated the water, which cause the volume to thermally expand ... and the water was pushed backwards through the meter and it did not allow the water pressures to build. However, with the DCV installed ... now when the water heater cycles and expands water, with no place for the excess water volume to migrate, it now causes a hydraulic effect within the closed system ... which causes the water pressure to become elevated, ultiamtely being relieved at the T&P ...
Here are a couple of links from Watts ....that will help.
Locally, we have been on the Cross Connection / Dual Check Valve crusade since early in 1991. We concur that the check valves warrant installation. However the Buidling / Plumbing Codes are not up to speed with truly what is going and how much damage to personal property is occurring with failed water lines ... both inside the home and outside.
Best, Gary H.
Hestand Associates / email@example.com
Posted on Feb 01, 2009
It it the relief valve. It is not normal to have water leaking out of it. The relief valve a a safety device which prevents the water heater from building excess pressure IF the control systems on the water heater fail. That little valve on the side is one of the most important safety devices in your home.
The relief valve needs to be replaced. Check under the referral section of Fixya.com for a qualified contractor in your area.
Please rate this response and best of luck, Phil
Posted on Dec 26, 2008
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Posted on Jan 02, 2017
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