How Does a Manual Water Pump Work?

1. A manual water pump works by creating a vacuum that forces water from a tank or area such as the ground and moves it through a pipe or hose into another area. Manual water pumps may be as simple as a turkey baster or as complex as the old hand-operated well pumps. Today, most pumping is accomplished by electric or gas-powered means, but manual pumps are still widely used.
2. The manual water pump creates suction by removing the air from a central chamber. Pumps are usually actuated by a ball that is squeezed by hand or by a lever that is pumped up and down. The air from the chamber is forced out through a one-way valve when the ball is squeezed or when the lever is pulled. Air returns to the chamber when the ball is let go or when the lever is returned to the normal position.
3. As the air evacuates the manual pump chamber, it creates an area of low pressure in the chamber, causing water to follow it into the chamber and through an outlet into a hose or pipe. To maintain a steady flow of water, it is necessary to continually operate the pump by either squeezing and releasing the ball, or moving the lever up and down.