Torch regulator and tank valve

Jewelry Discussion
1

I just set up my Smith Silversmith acetylene/air torch, using an MC
acetylene cylinder. After checking for leaks (none found), I fired
it up, and the torch seemed to operate fine. After shutting the tank
valve, and loosening the regulator key, I bled the hose by loosening
the torch handle valve and waiting for the HOSE pressure valve to
read “0”, then loosening the REGULATOR valve by turning it
counter-clockwise. The TANK pressure gauge, however, still reads at
approx 250 lbs psi, even with the tank valve tightly shut. Is this
to be expected? I would think that shutting the tank valve and
bleeding the hose would cause all gauges to read “0”.

Jerry

2

Hi Jerry,

After shutting the tank valve, do not loosen the regulator key. Bleed
the line by loosening the torch handle valve and after it reads “0”,
then tighten the handle valve to the off position and loosen the
regulator key.

Michael