A pressure booster pump (often called a booster pump) is a device used to increase the pressure of water or other fluids in a pipeline, especially where the natural pressure is too low for effective use. It typically consists of an electric motor, an impeller or multi-stage pump unit, a pressure tank, and a control system that may include a pressure switch or variable speed drive. The pump is designed to deliver consistent and reliable pressure for applications such as domestic water supply, irrigation systems, industrial processes, and high-rise buildings.

In operation, the booster pump draws in water from a source such as a storage tank or main supply line and uses a rotating impeller to accelerate the fluid, converting mechanical energy into hydraulic energy. This process increases the fluid’s velocity and pressure before it is discharged into the system. Modern booster pumps often include automatic controls that detect drops in pressure when taps or valves are opened; the pump then starts automatically to restore the required pressure and stops once the desired pressure level is reached. Some advanced systems use variable speed drives to adjust motor speed based on demand, ensuring energy efficiency, stable pressure, and reduced wear on components.