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Thread: Single lever shower valve leaking...through the metal !!!

  1. #1
    DIY Member pktaske's Avatar
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    Default Single lever shower valve leaking...through the metal !!!

    Hey guys! Was getting a wet spot by doorway of my small master bath. Thought it was the drain seal on my shower stall but when I looked behind the wall ( I have access) I see the drip is coming from a few (not one!) small pinholes in the cast valve body!!! I put this in about 11 years ago so it's not that old. I have water with high iron but not that acidic or hard. What could make a valve head sweat water like that? Just plain poor construction? Anybody ever seen this before?

    I haven't pulled it out yet as I wanted to push the job off till next week. I tried some epoxy but water pressure seems too strong to hold and I can't keep the pressure off on the valve for more than an hour because we need the water flowing in the rest of the house.

    Thanks . . .

  2. #2
    Master Plumber Redwood's Avatar
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    It could be corrosion or, just a hole caused by casting sand used in the molding...

    It doesn't matter it's replacement time...

  3. #3
    Plumber jimbo's Avatar
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    There is a rumor that Billy Mays died because he tried to epoxy a pipe under pressure! Yes...you have a situation not often encountered, and yes...you need to replace as soon as possible.

  4. #4
    Retired Defense Industry Engineer jadnashua's Avatar
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    Depending on the brand, many have a lifetime warranty, and if you call them and explain what's going on, they'll send you a new one. Better than money out of your pocket!
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  5. #5
    Moderator & Master Plumber hj's Avatar
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    Usually that indicates a foreign valve which used a poor grade of brass. Many imported items using the poor brass get "holes" in them.

  6. #6
    Retired Defense Industry Engineer jadnashua's Avatar
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    A porous casting happens, but most good places weed them out. Happens to cast aluminum wheels, too, sometimes which can be a real pain.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  7. #7
    DIY Junior Member jockygerald's Avatar
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    one thing we all should be taken care is use of water with maximum efficiency ,can all of you think that is shower is only option for bath?

  8. #8
    Test, Don't Guess! cacher_chick's Avatar
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    Quote Originally Posted by jockygerald View Post
    one thing we all should be taken care is use of water with maximum efficiency ,can all of you think that is shower is only option for bath?
    When you wallow in grease, mud, blood, and sewage on a daily basis- yes I think a daily shower is in order. The more water the better.

  9. #9
    DIY Member pktaske's Avatar
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    ok.. I sent pics of the valve (complete with leaking water and hole in the shower wall) to American Standard and as a 'courtesy' they are sending me a new valve even though I don't have my receipt from 11 years ago.

    How nice of them.

  10. #10
    Forum Admin, Expert Plumber Terry's Avatar
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    Can you post the model number and the picture here?
    That is good of A/S for supporting you that way.

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