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If you mean "can I remove the nipples from the gallon jug and use them in a larger container", the answer is yes. Or "most likely". By that I mean that most likely the threads on your horizontal nipples should be just fine, provided you didn't screw them into the gallon jug super tight. And even...

Just be sure to poke a tiny hole in the top of the coke bottle. Without the hole, you may get a vacuum-lock, in which they will peck at the nipple and no water will come out.