[Jewelry making - Article 00503] - Re: [Orchid] LPG vs Acetylene

[James Binnion]

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>     So james - you say that acetylene equipment should changed when
>     switching to lpg gas, is this information aquired by negative
>     experience and or inciden 

    Two reasons to do so, first the hoses rated for acetylene are
    attacked by propane which is the major component of LPG. And yes I
    have experienced this problem first hand, thankfully no harm done I
    could smell the leaking propane and replaced the hose. It is not an
    immediate reaction and takes a fair amount of time to destroy the
    hose but it does. The second issue applies if you run the LPG at a
    greater pressure than 15 PSI which is safe to do with LPG but if
    there any residues of acetylene compounds in your regulator or torch
    which is possible after long term use it can detonate. This second
    scenario is not a very likely one but is possible. So for safety it
    is best to have separate dedicated equipment for acetylene and LPG. 

Jim

James Binnion
jbin AT mokume-gane.com
James Binnion Metal Arts
http://www.mokume-gane.com
360-756-6550
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