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MIG gas leak

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MIG gas leak

Home › Forums › Workshop Techniques › MIG gas leak

Viewing 6 posts - 1 through 6 (of 6 total)
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  • 7 August 2024 at 16:12 #745735
    Speedy Builder5
    Participant
      @speedybuilder5

      My MIG set is about 10 years old, and I use disposable bottles of CO2/Argon mix bottles.  Whilst using the set today, I just happened to hear a hiss above the drone of the radio.  Finally located it to the flexible gas pipe between bottle and torch at a union inside the machine.  The tube never had any pipe clips as bought and I assumed that as the line pressure would be low, not required – WRONG.  I have now made some wire “clips” to seal the pipe to the union(s).

      Bob

      Gas connect

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      7 August 2024 at 17:10 #745745
      Dave Halford
      Participant
        @davehalford22513

        I’ve had a CO2 regulator fail, just check it’s not leaking on the diaphragm as well.

        7 August 2024 at 18:53 #745766
        Nigel Graham 2
        Participant
          @nigelgraham2

          As the set is ten years old might the pipe material have lost elasticity and relaxed slightly away from the fitting?

          If so it might give a similar problem at the nozzle end too.

          1 October 2024 at 04:00 #756885
          old fool
          Participant
            @old-fool

            Some of the Clark ones don’t have a propper regulator, the bottle has a tyre valve and the knob on the fitting unseats it a little. I found I was using bottles quite fast and on inspection found the pin in the controller wasn’t pressing it far enough. A strategic washer in the “regulator” cured it.

            Incidentally mine uses plastic washer tubing, mite be the way if your rubber pipe is getting tired

            Bob

            1 October 2024 at 09:48 #756920
            noel shelley
            Participant
              @noelshelley55608

              Depending on the quality or complexity of the machine there may be numerous pipes both inside and out. To the solenoid valve, valve to front panel and the pipe in the feeder to the torch, Check all of them may be with soapy water. Be aware that this is an electric machine when using water !  “O” clips of the right size closed with a pair of old fashioned carpenters pliers are good or the VERY small jubillee (worm drive) type clips will go down to about 8mm, a good motor factor may have them for fuel pipe. Noel.

              1 October 2024 at 15:27 #756966
              Dave Halford
              Participant
                @davehalford22513

                Gas pressure should be around 3 to 9PSI. But this thread is 2 months old

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