Re: Really really old Acetylene tank?
That Prest-O-Lite you have has the old style fine valve on it. Folks that use a POL to run their gas headlights can just "crack" that valve open without using a regulator. These old POLs show up mixed in with the new style center valve B tanks.
There are a lot of these POL tanks out there so I just swap my empty POLs with AirGas or PraxAir when I need one for my '14. I prefer to use a small Uniweld regulator and it makes keeping the headlight flames adjusted easier. Western will fill those tanks as long as they can be certified.
Last time I got a tank from AirGas they had two in their stack. One was a fine valve and the other a modern coarse valve.
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