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On one of my old bike, I have a twisted Presta valve: twisted presta valve

Unlike this user, I can't put glue on my valve because the air is leaking at the tip of the valve (where it is twisted). So, I want to know if I can change only the tip of my valve or if it is possible to just change the valve without throwing the tube.

  • twisted? nothing looks terribly off in this photo besides the rust at the base of the valve. could you describe this a little better? if the very left-most tip is bent, you can just bend it back with your fingers and it should be fine. – Paul H Jul 23 at 16:08
  • Indeed, the picture don't show it very well but the tip is really twisted and, when I screw it, air is leaking through it. There is no leak from the base of the valve despite the rust. – Pierre Jul 23 at 16:16
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    twisted? or bent? – Paul H Jul 23 at 16:22
  • @PaulH I'm sorry but I'm not sure to understand the difference between twisted and bent (I'm not a native English speaker). – Pierre Jul 23 at 16:29
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    Just replace the tube. It's not like they're expensive. Yes, there's an environmental impact but there are much bigger fish to fry in that regard. – David Richerby Jul 23 at 23:03
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As noted in this old question there exist Presta tubes from which the valve core can be removed; in this case it might be possible to replace the valve core.

However, yours appears to be a single piece valve (non-removable core).

removable vs non-removable core Presta valves

Since the valve is otherwise trash, I would try gently bending it straight using a pair of pliers. If it breaks, or doesn't straighten you're no worse off, since you'll have to discard it anyway.

  • Yep, use the pliers on the upper threaded portion. Of course, you'll need a replacement piece salvaged from another tube. – Daniel R Hicks Jul 23 at 17:08
  • @DanielRHicks What do you mean by "you'll need a replacement piece salvaged from another tube"? Can I just replace my valve with a piece from another tube? – Pierre Jul 23 at 17:58
  • @Pierre - Yep, that's what I said. I said "salvaged" because you'd presumably use the piece from an old tube vs rendering a new tube unusable. – Daniel R Hicks Jul 23 at 21:29
  • If I bin a presta tube, I always save the core inner in a little jar assuming its one of the removable ones. – Criggie Jul 24 at 5:11

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