Water Heater pressure relief line covered by concrete

Discussion in 'Water Heater Forum, Tanks' started by Ron Mac, Jul 3, 2013.

  1. Ron Mac

    Ron Mac New Member

    Jul 3, 2013
    North Florida
    My home is a two story brick. The water heater is in the middle of the downstairs in a closet under the stairwell. The line original travels inside of the foundation to a spot outside the outer wall that coincides with my breakfast nook.

    I recently had the patio on the back of my house extended. Although I showed the concrete contractor where my water heater pressure relief line came out of the brick wall, he still managed to concrete over it. The contractor claimed he couldn't find the line. Now he has passed away.

    What are my options? Do I jackhammer the patio until I find the line, or do I reroute the line? If I reroute the line, how do I go about it, seeing that there is another floor above the water heater?
  2. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    The relief line daylights above the ground.
    Can you go in the crawlspace, find the pipe, and determine if you can run it elsewhere?
    You can't trap it, it needs to grade downward by gravity.

    If that can't be done, there are some things that can be done.
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  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    While it may be nice to run that outside, if you run it into a pan then use a shutoff such as a www.wagsvalve.com to shut off the supply before it leaks so much as to damage the area, you don't need to run it outside. That is a T&P valve - temperature AND pressure safety release valve, and it should NEVER open unless something is very wrong. So, using a shutoff valve like the WAGS would force you to notice, since you'd no longer have any hot water at all, hopefully, before anything major occurred.
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