In article ,
"Willer" wrote:

I still wonder about deflagration: how is it possible for acetylene to exit
the acetone/pumice in the bottle, and travel up through the valve and to the
regulator, at over 160psi, without deflagrating? Never heard a good
explanation of this.



That's been covered several times in the thread by other posters. Part
of it is the tiny amount of "free" acetylene involved, and part of it is
that the open spaces between "the inside of the cylinder" and "the high
pressure side of the regulator" aren't large enough to allow the
acetylene molecules to "get a good running start", so that when they
bang into each other, they don't have enough energy to trigger the
initial breakdown and get the process started. I can *NEVER* remember
the proper term for the mechanism involved, but at least two others in
the thread have used it.

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