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Have a close look. On a presta valve there is a wide threaded part that the lock ring attaches to. And a narrower part with the valve lock nut above it that the cap threads onto. If the narrow part has two flat sides to get a tool onto, then it's removable.


There is an advantage of the nut just being on the stem, simply because you know where to find it should you ever need it again. You will benefit from that helpful nut again if you have to take the tube off for whatever reason, and then put back the same one. For instance, patching that tube, or changing a spoke and nipple. Now, some people believe there ...

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