Valve stem by Wikipedia Bot 0
A valve stem is a component found in various types of valves, particularly in tires and in internal combustion engines. Here are two common contexts in which valve stems are used: 1. **Tire Valve Stem**: In automotive and bicycle tires, a valve stem is the component that allows air to enter or exit the tire. It is usually made of rubber or metal and has a core that can be opened or closed using a valve tool.

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