Can you repair presta valve

So a new valve solution was needed to deal with this — the Presta valve. But now at last! But this could change quite quickly if the market needed it to. And sure, a Presta valve probably weighs two or three grams less than a Schrader, but really, are you that big of a weight weenie? Just blow your nose or spit if two or three grams is causing concern.

And the last consideration is valve length — tube manufacturers could easily make longer Schrader valves. This is my biggest annoyance. Bending it, or snapping it clean off happens, and that can ruin a ride.

That sucks. I know the bike industry loves standards, and speciality tools, and ways of doing things, but does it have to extend to what should be the most simple task of all — adding air to tires? But if your bike tire is low and you have Presta valves that air hose is practically worthless without the little adaptor. Are you getting leaks from the top of the valve itself or from the base, where the stem meets the rubber tube?

I think there must have been a worldwide change in the technology used recently, since all of a sudden I too have been having the values come off from the tube. Add a comment. Active Oldest Votes. You could try rubber cement however, you will probably still have a slow leak. Improve this answer. Additionally applying a light coating of baby powder to the tube will prevent the tube from sticking to the tire.

If the tube is sticking to the tire anytime the tire slips on the rim like when you are applying the breaks hard the tire will pull on the tube which in turn pulls on the valve. Which if it happens enough will put a whole in your tire near the bottom of the valve. Matija Mrkaic Matija Mrkaic 5 5 bronze badges. Peter Toth Peter Toth 11 2 2 bronze badges. Not all presta valves have removable cores. Here's an image I found showing valves with and without removable cores. It's also not clear if the OP is having problems with the valves themselves, or where the valves attach to the tubes.

The bit about using glue makes me think it's the latter. I'm not "hating you. I am not the only one who has noted that the question is unclear. See the first comment on the question itself and the other answer. The glue sounds to me like someone attempting to reattach a valve that has separated from the tube. Glue should not be needed to replace a valve core. I note that not all cores are replaceable because you say to save any valve.

This implies that they are all replaceable. I would hope that serviceable was implied. Sign up or log in Sign up using Google. Sign up using Facebook. The valve stems are easy to bend. It might be because of the technique you are using with your floor pump. Constantly yanking no pun intended in this manner can result in bending the valve stem.

You can use a Presta tube in a Schrader rim when encountered by an emergency fixation. A Presta tube can move in the wider Schrader rims to reach the bottom. Ensure that you use a valve nut to secure the tube to the rim. Ensure that the rims of the Schrader are wider than the Presta tube for the valve hole to widen. The only time it has been difficult is when the valve stem was too short for the deep rims I have, so there was no enough stem for the pump head to clamp onto.

Solution was to buy a valve extender. With my floor pump, you can easily tell when you have a good connection. They tend to leak air faster. Prev Post. Next Post.