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Thread: c25 regulator help

  1. #1
    Join Date
    Mar 2015
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    c25 regulator help

    i got the millermatic211 about a week ago and noticed right away the gas is leaking from the bottom port on the regulator which seems to be the pressure relief valve. based on the stamping on the back of the valve im assuming 3000psi is blow off. my c25 when full was 1900. is there any adjustment or repair that can be done on the valve ? i havent yet put any wrenches on it because i didnt want to leave a bunch of tool marks in case i have to send it back for replacement and they say i damaged it. heres photo of the bottom port and inscribed backside
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    invertig 221 water cooled
    millermatic 211

  2. #2
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    Sep 2016
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    Detroit, Michigan
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    Re: c25 regulator help

    I have had that happen on two different flow meters....one it took just a little turn and the leak stopped while the other kept leaking even after I tightened the fitting a bit (returned that one). There's a good chance yours just needs a little nudge, but it's not a bad idea to make a call before you try doing anything to it. That way if a bit of tightening doesn't solve the issue you already have a reason why you messed with it.
    Check out my bench vise website:
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    Miller Syncrowave 250DX
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  3. #3
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    Nov 2014
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    Re: c25 regulator help

    If it's leaking from that relief valve return it. Something inside is bad, maybe the diaphragm. Threaded fittings another story, I had one (Miller) that extremely tight hose fitting still had a slight leak. I put one layer of Teflon tape and it holds gas for days on end. Some times the treads are just not perfect.
    Ernie F.

  4. #4
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    Mar 2015
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    Re: c25 regulator help

    i called miller and they sending a new regulator no questions asked so that cool
    invertig 221 water cooled
    millermatic 211

  5. Likes Louie1961, walker liked this post
  6. #5
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    Mar 2015
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    Re: c25 regulator help

    update. 3dys after calling miller there was brand new regulator at my house with no question asked. doesnt get any better service than that
    invertig 221 water cooled
    millermatic 211

  7. Likes G-ManBart liked this post

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