Manual pumps are devices that use human effort to move fluids from one place to another. They typically consist of a handle, a cylinder, and a valve system. When the handle is pushed or pulled, it creates a vacuum or pressure that draws fluid into the cylinder and then pushes it out through a discharge outlet. These pumps are commonly used for tasks like transferring water, inflating tires, or dispensing liquids. These pumps are often favored for their simplicity and portability, as they do not require electricity or batteries. Manual pumps can be found in various forms, including hand pumps, foot pumps, and siphon pumps, making them versatile tools for both household and industrial applications.