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My Hot Water Heater Pop Off Valve Keeps Leaking. Can Someone Help?

I know it isn’t because the temp is too high, I have it all the way down. It didn’t leak when we first moved into the house. The only change is we went from well water to city water.

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  1. Comment by T C
    January 20, 2010 @ 6:41 am

    Supply pressure is probably greater from city water. Try what Mr. Fixit stated, and if that doesn’t work just replace it ……sometimes they go bad

  2. Comment by Rick J
    January 20, 2010 @ 9:13 am

    It needs to be replaced with one that is made for the new water pressure or put in a pressure regulator and gage before the Hot water tank. Then set it for the pressure that the safety valve calls for.

  3. Comment by ral
    January 20, 2010 @ 2:30 pm

    You need an expansion tank installed on the system. When you went from well system to city water you eliminated your well tank which acts as an expansion tank.

  4. Comment by bob f
    January 20, 2010 @ 4:07 pm

    You may have got a bad one right from the box. If it leaks during the day as well at night, It would be hard to believe it would be from street pressure since ‘head pressure’ is always higher at night when few people are using water.

  5. Comment by wing1500
    January 20, 2010 @ 10:08 pm

    It could be the the pressure is higher with city water and the pressure release valve spring is old.
    You can just replace the pressure release valve. Pick one up at a plumbing supply.

  6. Comment by Mr Fixit
    January 20, 2010 @ 11:03 pm

    sometimes you can “pop” it and let it clear debris…otherwise get a new one installed

  7. Comment by Doug Wilson
    March 19, 2013 @ 4:52 pm

    I have a gas water heater that once and a while will leak water from the pop off valve which is normally no problem but sometimes it leaks a little more and causes problem with the floor. Is it ok to run a pvc pipe from it, pop off valve, to the stand up drain for the washing machine, or does it need to be run outside? Thanks, Doug Wilson

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