Global Automobile Tire Valve Market 2016 - Schrader, Pacific Industrial, Alligator, Wonder, Shanghai Baolong, Hamaton
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.
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