There does seem to be some confusion. There are three types: pierce, screw on with a valve and click on with a valve (CV). Pierce cannisters are easiest to get, but are also a bit inconvenient and not the safest thing. The cannisters with a valve are better, but unfortunately there are two types: the screw on with a Lindall valve such as used by Primus, Coleman and many others, and the Camping Gas click-on version. In most countries the screw on canisters are quite easy to get (though never as easy as the piercable ones), but in France you can forget about getting screw on cannisters. France is Camping Gaz / click-on country. If you have a screw on stove, you need either an adapter for pierceable cannisters, or for click-on cannisters. There is one alternative, however, and that is to use a stove with a connector that works wioth both the scre on valve and the click-on valve. MSR do one, but Primus now also have at least three dual mode models.
Willem
