Yes, the Rocket Pocket stove screws into the fuel canister which has small threads in the top of it.

Once you are done using the stove, you unscrew it from the canister.

There is a valve in the canister that prevents the fuel from leaking out and I have never experienced any fuel leaks whether the canister was full or 1/2 used up.

What I like best about this stove is how compact it is and folds up easily into the included triangular case.
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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.

John Lubbock