On Aug 13, 8:53 pm, John wrote:
mhorowit wrote:
how low do you let your acetylene tank get before getting a refill? -
Mike

As long as you have check valves in the lines, to the point where there
is not enough pressure to sustain the 3-5 psi regulator setting at the
flow demand of the torch.

Acetylene is only unstable if in the gaseous state ABOVE 15 psi.

John

Paul Mee, the lead welder for Aeronca (sp) says never weld with less
than 100 pounds
if you want a good weld.
He said you ain't got enough heat. with less than 100 pounds.
I suppose if you just wanted to heat up something to bend it or
whatever, any psi would be ok
JimV.