How does an air foot pump work?

An air foot pump operates by using a piston mechanism that compresses air within a cylinder when the foot pedal is pressed down. This action creates a vacuum that draws air in through an inlet valve, and upon lifting the pedal, the compressed air is forced out through an outlet valve into an inflatable object, such as a tire or air mattress. The process is repeated with each press of the pedal, allowing for efficient inflation without the need for electricity. The simple design makes it portable and easy to use.