Questions tagged [valves]
Valves allow air to enter pressurized chambers (such as tires and suspension forks) and remain there. Common bicycle valves include Presta, Schrader, and Woods valves.
98 questions
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How do I use this pump?
This is my tire valve:
Tire Size: 27X1 3/8
These are my pump parts:
https://www.amazon.co.jp/dp/B009VYEKSO?ref=ppx_yo2ov_dt_b_fed_asin_title
"Supports American, British, and French bulbs"
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How to remove a stuck valve cap?
Never seen anything like this before.
I've tried pliers, wd40, vice grips etc but have completely failed to get the cap off the valve. when I twist the tube starts to twist via the valve.
Is there ...
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Are plastic stems on TPU tubes supposed to be reliable
I saw a deal for cheap road bike TPU tubes on a well-known Asian shop so I ordered several. After some time I tried to use one when changing to a trainer tyre for winter but I found out that the valve ...
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Inner tube valve leaks at high pressure
I installed a new 27 x 1 1/4 inner tube recently that did not leak when inflated to low pressure (ballooning to about 3cm diameter) on the bench but leaks through the valve when inflated to riding ...
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Do the old type of rubber hose Dunlop valves have any pros compared to the modern ones without rubber?
Do the old type of Dunlop valves with a small rubber hose have any pros compared to the newer, spring loaded ones?
So far, I’ve only come across cons, like that they dry out and are harder to inflate, ...
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valve stem caps on tubeless tires
On my road bicycle with tubed tires ridden only on paved roads, I never used the caps that covered the tube stems. Now that I have switched to road tubeless tires, do I need to use the caps to reduce ...
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When I press down on my presta valve cap when it is open why is no air coming out
I recently got my bike and it rides great. When I went to pump up the tubeless tires I realized that the presta valve cap isn’t letting air out when I press down on it when it is open. I looked on ...
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Repeated punctures at the base of the valve stem
I get many punctures at the valve stem in my 29 inch mountain bicycle. any tips to avoid them?
The hole with leaking air is marked with green circle (click for larger):
The rim with rim tape next to ...
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How does a Presta valve core work?
I would like to understand how Presta valve cores work.
A Presta valve core contains all of three screws:
the top nut screw (brass part, right side of the image),
the valve cap screw (with notches ...
- 11.9k
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How do I stop a removable valve core from leaking?
This Presta valve core, here removed, has been a nuisance since day one. Once inflated, it holds the pressure well for a trip to the trails, but after 3-4 days, the wheel is flat again. The volume (29&...
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Leaking valve hole
I tried different valves with no luck and used gorilla tape for inner wheel so I don’t think it’s the valves and I’ve taped it making sure.
I’ve covered all the holes. I am at my wits end with ...
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New presta valve core leaks
I have tubeless tires with sealant and there was sealant leaking from both presta valves after using a broken bike pump on them. After it it seems like the sealant clogged the valve a little bit and ...
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Dunlop valve with schrader chuck compatibility
I have a dunlop (or woods) valve that I would like to inflate.
I am trying to avoid needing to screw on a chuck, so I was looking at some options online to be able to do this, but most chucks that ...
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Valve stem too thick for hole in rim?
The rubber protection cover does not pass through the hole in the rim. Something can be done or not a fit?
This valve has a rubber reinforcement that does not pass through the hole in my rim. The hole ...
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What DT Swiss Valve and Tubeless Tape fit DT Swiss Wheels 2291335 and 2569868?
I recently bought the Endurace CF SL 7 eTAP bike and it came with DT Swiss wheels.
DT Swiss front wheel 2291335
DT Swiss rear wheel 2569868
What DT Swiss valve would I use for my front and rear wheels?...
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