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:
“Apples? New Hampshire has them, but unsprayed,
With no suspicion in stem end or blossom end
Of vitriol or arsenate of lead,
And so not good for anything but cider.”
—Robert Frost (1874–1963)