"Nick Müller" wrote in message
...
| Don Bruder wrote:
SNIP
| Do yourself a favour:
| Look at your acetylen bottle. Open it. Look at the primary pressure. It
| will be around 8bar (116psi). Still living? Now look at the scale of the
| primary pressure gauge. There will be a red line. It is a 18 bar (260
| psi).
| Don't tell me, that the pressure regulator is filled with acetone. Even
| the bottle isn't filled completely with acetone. Only about 2/3 of the
| bottle are. That's because you are allowed to use them tiltet (as long
| as 30 deg (IIRC) out of the horizontal). Now this means, that the
| acetylen _has_ pressure of 116 psi inside the bottle and the first half
| of the pressure regulator.

This thread got me wondering how the bottles get filled at the gas
plant. Is the pure acetylene pumped into an upright bottle containing the
existing acetone, or is the depleted acetone solution removed and replaced
with the mixed solution in an inverted bottle? Or something altogether
different?