A Venturi pump is a device that uses the principle of fluid dynamics to create a vacuum or move fluids. It operates by forcing a liquid through a constricted section of a pipe, known as the Venturi effect. As the liquid speeds up in the narrow section, its pressure decreases, allowing surrounding fluids or gases to be drawn in. These pumps are commonly used in various applications, including aquarium filtration, chemical processing, and vacuum generation. They are valued for their simplicity, reliability, and ability to operate without moving parts, making them low-maintenance and efficient.