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Backpurging pipe HELP GUYS

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  • #16
    I have been using the aluminum foil and brake line for three decades. Nothing I have ever used is faster cheaper or simpler.

    A note on KB's point about positive pressure, once the atmosphere is displaced, you only need enough pressure to counteract atmosphere. Since the argon is denser than the atmosphere you can get a way with 1 - 3 psig.

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    • #17
      Originally posted by Teglove2 View Post
      Hey guys my name is Ryan and I am an aviation tig welder and fabricator of custom turbo kits on the side. I do A LOT of pipe welding and I REALLLLY need to find plugs I can use for the ends of my tubing to backpurge with and I do not have the time to make them and I know someone out there makes them. I searched and searched and couldnt find anything please help me out. Thx guys
      Ryan.

      P.S. the pipe im welding is 1.25/1.5/2.0" ID
      http://www.intercononline.com/welding/mainpurg.htm
      http://files.aws.org/wj/2006/12/wj200612/wj1206-38.pdf

      Out of curiosity, I googled "pipe purge dams" and got 304,000 hits. Umm.

      Griff
      Last edited by griff01; 12-27-2008, 09:49 AM.

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      • #18
        mark.c

        No need to purge aluminum makes no difference, I have welded pipes 100% xray without purge
        Last edited by mark.c; 02-27-2013, 10:54 PM.

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        • #19
          Backpurging pipe HELP GUYS

          Foam from an old couch cushion works well or for tape they make that aluminum foil tape it won't burn only the glue gets a bit messy.

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