If its a caravan youve got you only need one bottle,a spare is handy..There is two types of bottle..red is propane and blue is butane..you need the right connector and they to are colour coded,get them from a caravan dealer.cheap couple of quid
I take it's for using with the Montana, as rooks said you will need the Y piece a couple of lengths of hose and jubilee clips and a gas cylinder. When we had the Montana we used a Campingaz 907 cylinder to fire up a Cadac grill and a gas barbecue. Easy.
------------- XVI yes?
As well is two words!
How does a sage know everything about everything? or does he? or does he just think he does?
Remember, if you buy something you bought it, not brought it.
We run the fridge and cadac off the same bottle with no problems. We also use the snap on connectors which makes connecting and separating appliances much easier.
We run the 3 way fridge and the gas cooker off one bottle and use T piece as well as snap on cxonnectors for convenience. Works fine. Same as pigletandtigger