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  1. #1
    Join Date
    May 2013
    Posts
    10

    Default Purging mig c25 shielding gas after welding?

    I saw on a tutorial that you should purge the c25 gas out of the line when your finished welding. Seems like a waste of gas.. but is this a true statement, can't seem to find an answer on the net.

    Thanks!

  2. #2
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    257

    Default

    I have never done that. My lines don't leak. Plus I sometimes leave my bottles open. Through lunch break.
    .
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  3. #3
    Join Date
    Apr 2012
    Location
    Western Pa.
    Posts
    241

    Default Purging mig c25 shielding gas after welding?

    My bottles are on all day long & many days I'm in shop 16 hrs. Also many shops run 2 shifts bottles open 24 hrs. What good would it be to purge out gas out. Never heard of that.
    If my pressure bleeds off over weekend or after vacation etc. I purge the line before start first weld.
    Not everything u read is true or I'd be a French Model. My wife assures me that's not true.

  4. #4
    Join Date
    Nov 2011
    Posts
    157

    Default Purging mig c25 shielding gas after welding?

    I personally do purge when done.

    Turn wire speed way down, turn bottle off and pull the trigger.

    Way back in high school my shop teacher (welder for 20+ years) thought us to purge for the following reasons.

    1. Better for solenoid/o-rings as they are not under constant pressure .
    2. Makes you purge the line every time before welding (granted your mig doesn't self purge)
    3. Assures your bottle won't be empty next time you go to use it.

    I have always done this since my teacher showed me way back.

    May not make sense for high use applications as I am a hobby type user and not a pro welder

  5. #5
    Join Date
    Oct 2009
    Location
    Reno, NV
    Posts
    299

    Default

    As a matter of habit from WWAAAYY BACK, I always release the pressure on my MIG and TIG machines as I never really know when it will be used next. The "common wisdom" is that letting the pressure off is best for all the parts that would otherwise be holding pressure and it sure as **** can't hurt anything. Besides, if letting out 1.5 cents of gas once in a while is going to cause a guy to be eating cat food anytime soon just maybe the money is getting away a LOT faster elsewhere, huh?
    Don J
    Reno, NV

    Never pick a fight with an old guy. Old guys are too smart to fight and get hurt. They'll just kill you and get it over with.

  6. #6
    Join Date
    Sep 2005
    Location
    Houston, TX
    Posts
    900

    Default

    If it has a regulator or flow meter, I purge after use.

  7. #7
    Join Date
    Apr 2010
    Posts
    276

    Default

    I used to burp my children.

  8. #8
    Join Date
    Nov 2011
    Posts
    157

    Default Purging mig c25 shielding gas after welding?

    USMCPOP;

    I don't understand!

  9. #9
    Join Date
    Apr 2010
    Posts
    276

    Default

    Quote Originally Posted by ericher69 View Post
    USMCPOP;

    I don't understand!
    Kidding - feed a baby, burp it afterwards.

  10. #10
    Join Date
    Oct 2005
    Location
    North Central Indiana
    Posts
    782

    Default

    I always bleed the gas and open the wire drive so before starting to weld again the gun can be purged without wasting wire. It would be a nice feature if they would put a purge button on the gun..... that way after stopping for what ever reason you could re-purge the gun right at the handle without having to open the machine and wire drive up. It would stop sputtering and porosity on starts.

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