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Thread: 3" black steel gas line

  1. #1
    DIY Junior Member Ehargis's Avatar
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    Default 3" black steel gas line

    Us it against the ipc code to use 3" threaded gas line, or does it have to be welded. This is outside residential, on a generator.

  2. #2
    DIY Junior Member Ehargis's Avatar
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    Default

    Is, not us!

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Default

    I have never had to weld it. But, if possible, I would convert the system to medium pressure so the pipe size would be MUCH smaller with a regulator at the generator.
    Licensed residential and commercial plumber

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