by emptyglass » Thu Mar 21, 2013 10:28 pm
Acetalene and LP gas regs are not really the same.
Acet is an absorbed gas, max pressure is about 22psi from memory, or something like that, but LP is a high pressure gas. Not really the fittings fault.
Some fittings will work on both, its often the end detail thats different, the thread is the same. Some LP gas ones that don't have the o ring groove will work on both.
The LP gas one pictured will undo with a spanner on the hex at the end near the O ring. The acetalene one is not real clear, butI think it will have a hex broached in the end, use an allen key to get it out.
The way they seat in the bottle is is often different between makers, and different between how they connect to the reg/appliance. Its hard to find the right one sometimes, but camping shops are usually the best bet.
Most regs will say what gasses they are suitable for.
Dont use an acetalene reg on LP Gas. :naughty: