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-   -   One inch gas pipe (https://www.askmehelpdesk.com/showthread.php?t=209545)

  • Apr 25, 2008, 01:35 PM
    dje530
    One inch gas pipe
    What length of unthreaded one inch gas pipe should be exposed when stubbed out from a finished wall
  • Apr 25, 2008, 03:48 PM
    massplumber2008
    Dje530:

    You need to tell us more than that... ;)

    You said UNthreaded..? Why..? Not attaching anything?

    Stubbed out from finish wall..? Why?

    Let us know more. Thanks.. Mark
  • Apr 25, 2008, 05:39 PM
    dje530
    It's a question on a plumbing quiz and I don't know the answer. NO othe rinfo
  • Apr 26, 2008, 06:14 AM
    speedball1
    Quote:

    Originally Posted by dje530
    It's a question on a plumbing quiz and I don't know the answer. NO othe rinfo

    Got to be a trick question! I'm going after this question the practical way. Since the pipe coming out of the wall's unthreaded black iron pipe and compression fittings can not be used a thread must be put on that bald piece of pipe.
    Soooo, a 1 inch ratchet dye,(See image, no room to swing a block dye pipe threader) will take up close to three inches I would say that piece of pipe should be at least three and a half inches out from the wall. And I would add a footnote saying that, as a plumber, I would NEVER terminate a black iron gas supply without a thread.
    While this probably isn't the answer they want this is the one that will get your gas appliance connected. Good luck on your test. Tom

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