What should be done and what I actually done are two different
things. I never bleed dry my regulators although for complete saftey
I should because the fuel in the hoses are vulnerable. I do ALWAYS
shut down the tanks though. The amount of fuel in the regulators
that could leak out is equivalent to what you would bleed at the end
of the day anyhow. Basicly negligable.
My reasoning is this…As for the regulators: On the oxygen side
slamming the first stage bladder of the regulator daily with
1000-2000 lbs of pressure is more stress than leaving the pressure in
there. On the Acetylene side the tanks hold only about 200 lbs max
so this is not really an issue. Also every morning before I open the
tanks up again I am able see immediately if any fuel or oxy has
leaked out. They should both still be at 6 lbs for each line. If
not I know have a leak to fix.
You will find a lot of people on the "better to be safe than sorry"
side of this issue. I was taught to bleed them too but don’t for the
above reasons. If you are concerned about it you should bleed them
and not lose sleep over it. You choose.
Just a side note: It is critical that you make sure your tanks are
secure and cannot fall over. (Chained or tied) You don’t want to
break the regulators and you really don’t want to expose the neck of
a full oxygen tank to damage.