hi @marine
just look for any gas called propane or mapp gas. it doesn't matter what brand, although you will need something that you can get an adapter for.
(mapp gas is typically used as a fuel source for brazing/silver soldering and therefore has the standard screw thread to fit on a blowtorch)
pressure changes a bit with temperature, which is why it's kept as a liquid inside the can/magazine by pressurising the can and therefore the magazine. so I can't really help on that front unfortunately.
hi @Crazy_Crystal it´s important know pressure each propane. MAPP PRO for example has 30 bar and I think that is soo much....