[Jewelry making - Article 00604] - Re: [Orchid] Acetylene Safety Issues

[joe bloyd]

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    My welding supply store warns AGAINST using a soapy water solution
    to check for leaks on bottled gases, especially oxygen...UNLESS one
    is absolutely certain that it is a NON PETROLEUM based soap being
    used such as liquid Ivory. 

    I can't relay their explanation in detail but the jist of it has to
    do with the gases moving into the regulators with such
    speed/pressure (especially the oxygen.) that the "friction"
    generates enough heat to ignite petroleum residue. They note of
    course that this is undesirable since open flame and bottled gases
    don't mix well. 

    This said I will be the first to admit that I have for years used
    "any old liquid soap" and water mixture to test propane connections
    and have had no problems. But believing that old dogs can learn new
    tricks...sometimes, I have heeded the warning and now use only
    non-petroleum based liquid soap. Can't be too safe with these gas
    setups! 

    (The welding shops also sell bottles of safe solutions for leak
    testing .) 

    Usual disclaimers... 

    Joe Battle Ground, WA where it's unseasonably sunny and warm.

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