I own a v4 version. Unfortunately, it is no compatible with the fittings of the big (11Kg) propane containers. It seems imposible to here find propane disposable cans that fit with this adapter, the screw is different.
Maybe the solution is use an A2 + F276130 adaptors like its said in this page. That torch seems screwed on a disposable gas container.
Any comments or ideas? Or are we dommed to buy "green gas" until we burst?