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  • Desoldering Question

    Something I have wondered about - if you heat a fitting in order to remove pipe or a fitting is there a risk of causing leaks in nearby fitting or other branches of the fitting being heated that will get hot and may cause the solder to melt.

  • #2
    Re: Desoldering Question

    With proper heat and torch techniques, not an isusue. Controlling the heat is the key. Too much and you will overheat the fitting making it almost impossible to remove.

    Now when you want to remove a branch from a tee, 90 or coupling, there's a chance as its the same fitting.

    Using a damp cloth around nearby fittings and valves is a simple trick. So is soapy water as it clings better.

    Rick.
    phoebe it is

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    • #3
      Re: Desoldering Question

      Originally posted by PLUMBER RICK View Post
      With proper heat and torch techniques, not an isusue. Controlling the heat is the key. Too much and you will overheat the fitting making it almost impossible to remove.

      Now when you want to remove a branch from a tee, 90 or coupling, there's a chance as its the same fitting.

      Using a damp cloth around nearby fittings and valves is a simple trick. So is soapy water as it clings better.

      Rick.
      What would you do if it's the same fitting since water or damp cloth will make it harder to get it is up to temp plus the cloth may catch fire and/or the water may boil off before you are done. Do you just typically chance it and hope for the best? And if a unintended leak does show up on the branch that is not to be desoldered can you just reheat the fitting and feed a bit of new solder into the joint or would it be a total redo?

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      • #4
        Re: Desoldering Question

        With newer water soluble flux, it's a redo. With older non soluble flux you could actually resolder.

        Small fittings are easier to just swap out. Bigger fittings are more tolerable to heat as most is absorbed and It takes a lot of it to melt the solder.

        Rick.
        phoebe it is

        Comment

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