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  1. #1
    Join Date
    Aug 2007
    Posts
    712

    Default Problem With A Regulator

    I have a Smith regulator that came with my Miller 252. When the gas is turned on the tank the low pressure gauge slowly keeps rising. If the mig gun is triggered the pressure falls and I hear gas coming out of the gun. When the trigger is let off the low pressure gage continues to rise irrespective to the adjustment on the screw. When the gas is fully bled off the gage stays at 10 and will not return to zero. what is wrong with the gage?
    Thanks,
    Nick

  2. #2
    Join Date
    Sep 2005
    Location
    northern NJ
    Posts
    1,794

    Default

    Sounds like a leaky diaphragm. As for the gauge staying at 10 it could be a bent needle, dropped gauge, out of calibration.
    MM250
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  3. #3
    Join Date
    Aug 2007
    Location
    Northern California
    Posts
    170

    Default

    As MMw says, it could certainly be a bad diaphragm.

    If you decide to replace the regulator, I suggest a flow meter such as a Smith or a Victor. I like the visual aspect of the floating ball. The regulator types are more difficult to read, at least in my opinion.

    I have a Victor flow meter on my Millermatic 252 and a Smith on the Syncrowave 200. Both of them were bought about 20 years ago and are still going strong.
    Last edited by Synchroman; 07-15-2013 at 07:48 AM.
    Miller Syncrowave 200
    Milermatic 252
    Lincoln AC/DC "Tombstone"

  4. #4
    Join Date
    Nov 2003
    Posts
    2,792

    Smile Keep a Spare on Hand..

    Good illustration for why you should have a spare regulator on hand...
    even one of the $25 import ones with the ball flowmeter...

    ArgonReg.gif

    Just put on the spare and send the defective one out for repair and recertification...
    .

    *******************************************
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  5. #5
    Join Date
    Oct 2007
    Location
    Cave Creek Az
    Posts
    929

    Default

    Pressure creeping up is usually debris in the orifice. You might try connecting the reg without the outlet hooked up and burping it a time or two. Otherwise go to the link I sent you on the SFT board.

  6. #6
    Join Date
    Aug 2007
    Posts
    712

    Default

    Thanks for the advice. I really appreciate it. I have a ball style regulator as an extra. I will either get it fixed or attempt to do it myself.
    Thanks again,
    Nick

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