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  1. #21
    Join Date
    Dec 2007
    Posts
    157

    Default Backup...

    I think the biggest danger aside from the obvious is one gas backing up into the other line like if the tip was clogged and both valves were open. Check valves in the torch should at least prevent that.
    John

    Thunderbolt AC/DC
    MM 175
    Maxstar 150 STL
    Blue Star 185 DX
    Spectrum 375

  2. #22
    Join Date
    Aug 2006
    Location
    N.C.
    Posts
    362

    Default

    Fishy....how /why is i that you want to run your mouth but when asked a question relevant to the topic you have nothing to say ?
    George W. Bush was saving your butt whether you liked it or not!
    Fear is temporary, regret is forever
    HH210 with SG

  3. #23
    Join Date
    Oct 2006
    Location
    Mpls, MN
    Posts
    1,790

    Default

    Where was I asked a question that hasn't been answered?
    Syncrowave 250DX
    Invison 354MP
    XR Control and 30A

    Airco MED20 feeder
    Thermal Dynamics Cutmaster 81
    Smith O/A rig
    And more machinery than you can shake a 7018 rod at

  4. #24
    Join Date
    Aug 2006
    Location
    N.C.
    Posts
    362

    Default

    Quote Originally Posted by 84ZMike View Post
    ............so explain to me what you use and why......so that we can all learn.....I'm not saying my way is the best / only way to do it but I feel better with my set up and it works just fine for me.
    Post # 16.... after reading it I see how you could have passed it over....so what do you use and why?
    George W. Bush was saving your butt whether you liked it or not!
    Fear is temporary, regret is forever
    HH210 with SG

  5. #25
    Join Date
    Oct 2006
    Location
    Mpls, MN
    Posts
    1,790

    Default

    I have arrestors on one of my torches and none on the other.

    Why? Cause they came with one and not with the other.

    Why not use them? Because there's nothing that could happen if you had a flashback short of maybe blowing out a hose. I've never had that happen, and I rarely use the O/A rig anymore anyway.

    If they were so necessary, they'd be built into the torch body and it would be required by the feds.

    Smith doesn't even say they're needed:
    http://enet.smithequipment.com/public/docs/BDBinDoc.asp?ID={ED220DF6-8247-4F50-BE48-24855652BF12**&DownLoad=0
    Syncrowave 250DX
    Invison 354MP
    XR Control and 30A

    Airco MED20 feeder
    Thermal Dynamics Cutmaster 81
    Smith O/A rig
    And more machinery than you can shake a 7018 rod at

  6. #26
    Join Date
    Feb 2005
    Location
    N.E. SD
    Posts
    1,378

    Default Read this.

    http://www.msha.gov/stakeholderbp/be...nacetylene.pdf
    In my world, if MHSA says it then that is the end of the debate.

    FWIW, Smith has an internal flashback arrestor in the head.
    Jeff

  7. #27
    Join Date
    Oct 2005
    Location
    Bulverde, Tx
    Posts
    1,244

    Default

    If MSHA says it, then OSHA does as well...birds of a feather and all the rot.

    I have seen acet regs that went boom, too. Nasty little grenade going off there.
    Don


    '06 Trailblazer 302
    '06 12RC feeder
    Super S-32P feeder

    HH210 & DP3035 spool gun
    Esab Multimaster 260
    Esab Heliarc 252 AC/DC

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