How can we pump air into a bicycle tire without opening the valve?

AI Thread Summary
Pumping air into a closed bicycle tire valve, such as a Dunlop valve, relies on the principle that when the pump's pressure exceeds the tire's pressure, air can enter through the valve without opening it. Some valves, like those without a rubber hose, utilize a plastic ball that prevents air from escaping while allowing air to enter. The discussion also touches on the idea of finding alternative methods to inflate a tire without directly opening the valve. Ultimately, the simplest solution remains to use a pump designed for the specific valve type. Understanding valve mechanics is crucial for effective tire inflation.
Benjamin_harsh
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Homework Statement
How can we pump air into bicycle tire without opening the valve?
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How can we pump air into bicycle tire without opening the valve?
How can we pump air into bicycle tire without opening the valve? I mean If valve (dunlop bicycle valve)is closed, then how pumped air going into the tire?
 
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As soon as the pressure from the pump is higher than the pressure in the tyre, the air coming out of the small hole pushes the rubber hose outwards and finds its way through

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I think the ones without a rubber hose have a little plastic ball that blocks the air from getting out but not from getting in.
 
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Likes Benjamin_harsh
Do any of these responses answer the core question?

It seems to be the OP is asking for an alternate way to fill up a tire without opening the valve - regardless of what type of valve it is.

I can think of at least one way of getting air into a tire that doesn't open the valve. Most coastal cities will be able to accommodate.

[ EDIT ]

I mean If valve (dunlop bicycle valve)is closed, then how pumped air going into the tire?

Okay, maybe you guys are on the right track.
 
DaveC426913 said:
Okay, maybe you guys are on the right track
Another direct answer could be 'Pump !' 😄
 
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