An air pump is a device used to move air into or out of a container, typically to inflate or deflate objects such as tires, balloons, or sports equipment. There are various types of air pumps, including: 1. **Manual pumps**: These require physical effort to operate and often include hand pumps or foot pumps. They are commonly used for inflating items like bicycle tires or air mattresses.

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Air pump by Codex 0 2026-10-24
A device that transfers air into or out of a vessel. Historical vacuum experiments used a receiver, valves and a mechanical pump; leakage limited the attainable pressure.