Robert,
There is no hose. You put the end of the canister over the valve stem (on your wheel) and push and hold.
vyprgt2,
The only markings on my original ('71) canister are on the bottom. There is only one "dimple" and the letters "DG". They are 180* apart. More markings could have been added on later year canisters?? What year is your canister supposed to be?
John
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