Sorry, "Regulator" was the wrong word - I did indeed mean the fitting that goes on the gas bottle(s) themselves.
I have the Cadac Carri Chef 40. I had planned to buy the Cadac 343 hose and (29mbar) regulator to use with my current 500g gas cartridges.
However, it seems daft taking two lots of different gas out.
I know the Cali takes 907 gas but I don't know what the connection type on these looks like so just wondered if it was possible to use the the 907 gas on the Cadac by buying the right regulator.
Having googled, its clearly completely different.
I'm not sure I want to go down the route of fitting quick release fittings, or even where to start to be honest.
Although I'm now wondering whether to seek help on this.
Looking at the cost of the 907 cartridge - £60.00ish for 2.8kgs of gas, I'm thinking for under £40.00 I can buy 6 x 500g Cartridges (3kgs) so I'd be saving every time and not lugging the weight of gas around.
Its how I get the Cali to run off the Cartridges I'll need help with - unless its a case of just removing the current regulator and using those quick release couplings you showed.