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  1. #1
    Join Date
    Aug 2012
    Posts
    1

    Smile soldering copper

    need to extend the copper tubeing for the shut off valve to the toilet, in order to tile wall. Problem is,even with the main water valve turned off, the water flow is still at a constant drip, not allowing me to heat the copper for a good weld. Have tried bread to obsorb water,but flow is to great for a weld to take place. Of course the toilet shut off valve is the lowest(elevation) of the water line, tried opening other valves to drain off water, not successful, tried bread to soak up water while soldering, flow to great before tubeing can be soldered. Force air into water line to remove excess water? Any other ideas? Thanks C

  2. #2
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,084

    Default Re: soldering copper

    Don't use bread - it creates clot down the line.

    Your lowest point is at your water meter. Turn the main shut off valve at the meter to off position and loosen up the nut over there, just enough to let all water in the house out.

    Now heat the nipple and let all the water disappear: you are ready to solder.

    Go back to the meter and tighten the nut. Be careful. Turn the valve on. Done.

    Can't do it? get a plumber to help you.

  3. #3
    Join Date
    Jan 2009
    Location
    Needham, MA
    Posts
    559

    Default Re: soldering copper

    actually it sounds like your main shutoff valve is not doing it's job. maybe the washer in it is cracked or old and breaking apart. it's just going to create a larger problem down the road if the washer totally fails. my advice would be to get a plumber to replace your shutoff valve first, then you can make your repairs.

  4. #4
    Join Date
    Dec 2010
    Location
    Houston Texas
    Posts
    2,360

    Default Re: soldering copper

    use a valve that attaches with a compression nut, like this.

  5. #5
    Join Date
    Feb 2010
    Location
    South*East
    Posts
    1,168

    Default Re: soldering copper

    Quote Originally Posted by HoustonRemodeler View Post
    use a valve that attaches with a compression nut, like this.
    Houston I think he is trying to extend the copper and not just replace the stop. As MLBSF said he needs to replace the main valve first.

    John

  6. #6
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,084

    Default Re: soldering copper

    Absolutely, replace the main shutoff valve while the meter is turned off, as suggested. Get the washerless kind, 1/4 turn brass ball valve w/long handle.

    When you're ready to install your angle stop, you have options: compression valve, like the one Houston mentioned, sweat valve and threaded valve, for which you need to install a male adoptor on the new nipple. Don't forget to insert a copper size flange first.

  7. #7
    Join Date
    Aug 2007
    Posts
    612

    Default Re: soldering copper

    Shark Bite union to extend the copper, no soldering necessary.

  8. #8
    Join Date
    Aug 2012
    Location
    NY, USA
    Posts
    18

    Default Re: soldering copper

    HI
    You can use tin lead solders for electrical applications. Its could be used lead free solders for plumbing applications.

    Thank U

  9. #9
    Join Date
    Jun 2012
    Posts
    19

    Default Re: soldering copper

    Quote Originally Posted by bp21901 View Post
    Shark Bite union to extend the copper, no soldering necessary.
    Solved the problem with this in line shut off valve. You may have to make adjustments to your toilet supply afterwards

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