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  1. #1
    Join Date
    Dec 2007
    Posts
    4

    Default NEW Pressure Relief Valve - Still Leaking

    I just had a new pressure relief valve installed on a 10 year-old, 50 gallon Water Heater. It is still leaking from the same spot (the vertically attached copper pipe attached to it).

    Is it a case of the plumber not tightening it enough or could it be a more serious problem?

  2. #2
    Join Date
    Aug 2007
    Posts
    443

    Default Re: NEW Pressure Relief Valve - Still Leaking

    Whatever is causing the leak, it's up to the plumber to make good on the repair; you already paid him/her, so the repair is guaranteed---call them right back.

    It could be any one of 5 things:

    The new T&P valve could be defective, or of the wrong value; there is too much pressure in the incoming water line, in which case a water pressure reducer would have to be installed on the line.

    Sometimes an expansion tank is installed on the line.

    Most T&P's are set to open at 150 psi, but some open at 125 or 75 psi; they may have installed the wrong valve.

    You can check the WP yourself if you want to take the trouble of buying a psi gauge at HD/Lowe's, or a plumbing supply house.

    Get one that will fit the garden hose fitting on the drain valve & open the drain valve once it is installed there to check the pressure.

    There should be a metal tag on the T&P valve that indicates at what pressure it opens at.

    The water pressure should not be over 80 psi.

    For further info, go to the site below, then click onto "site map" at the bottom of the page, then onto "Tanklets", then onto "Temperature & Pressure Relief Valves".

    http://www.waterheaterrescue.com
    Last edited by JacktheShack; 12-24-2007 at 12:04 PM.

  3. #3
    Join Date
    Dec 2007
    Posts
    4

    Default Re: NEW Pressure Relief Valve - Still Leaking

    Quote Originally Posted by JacktheShack View Post
    Whatever is causing the leak, it's up to the plumber to make good on the repair; you already paid him/her, so the repair is guaranteed---call them right back.

    It could be any one of 5 things:

    The new T&P valve could be defective; there is too much pressure in the incoming water line, in which case a water pressure reducer would have to be installed on the line.

    sometimes an expansion tank is installed on the line.

    Most T&P's are set to open at 150 psi, but some open at 125 or 75 psi.

    You can check the WP yourself if you want to take the trouble of buying a psi gauge at HD/Lowe's, or a plumbing supply house.

    Get one that will fit the garden hose fitting on the drain valve & open the drain valve once it is installed there to check the pressure.

    There should be a metal tag on the T&P valve that indicates at what pressure it opens at.

    The water pressure should not be over 80 psi.

    For further info, go to the site below, then click onto "site map", then onto "Tanklets", then onto "Temperature & Pressure Problems".

    http://www.waterheaterrescue.com
    Thanks for the reply. A different plumber from the same company showed up today. The first thing he did was knock on the Expansion Tank and noticed that there was water in it. He knew right away (at least I hope!) that that was the issue and it should have been changed at the same time as the T & P valve. Hopefully this solves the problem. He set it at 80 PSI.

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