Thanks, but that appears to show it with a cylinder regulator, the "caravan" hose type hook up is what I was thinking off, is it the case that the regulator on my under-slung tank works at the right pressure? Just being a bit cautious as its gas!
I looked at this problem and found you could get a special adaptor and hose but it was extremely expensive. The problem I think is the current weber model doesn't use a hose, the cannister screws directly into the side of the bbq so you need an adaptor which mimics the top of the gas cannister.
Something like this, although currently unavailable.
I had one very similar years ago. Whilst it was quite good whilst it lasted the cheap tin that it's made out of soon rusted out and that was after replacing the burner which also rotted out in short order.
Whilst I am a Cadac fan I don't regard it as a BBQ, more of an outside cooker.
I won't buy any BBQ nowadays unless the tub and lid are made of aluminium and spare burners are readily available otherwise they seem to become 1 season use only then throw away and its not because I leave them outside 'cos I don't.