A rotary pump is a type of positive displacement pump that moves fluids by trapping a fixed amount of liquid and forcing it into the discharge pipe. It operates using rotating components, such as gears or vanes, which create a vacuum that draws in the fluid. This design makes rotary pumps efficient for handling various liquids, including viscous fluids. These pumps are commonly used in industries like oil and gas, chemical processing, and water treatment. Their ability to maintain a steady flow rate regardless of pressure changes makes them ideal for applications requiring precise fluid transfer.