A valve stem is a self-contained valve which opens to admit gas to a chamber (such as air to inflate a tire), and is then automatically closed and kept sealed by the pressure in the chamber, or a spring, or both, to prevent the gas from escaping. They are most commonly used on automobile and bicycle wheels, but also for many other applications.
Read more about Valve Stem: Schrader, Presta, Dunlop (or Woods), Others
Famous quotes containing the word stem:
“All things seem mention of themselves
And the names which stem from them branch out to other referents.
Hugely, spring exists again.”
—John Ashbery (b. 1927)