Fire sprinkler systems typically use either a centrifugal pump or a positive displacement pump. A centrifugal pump uses an impeller to generate flow and pressure, while a positive displacement pump uses a piston, diaphragm, or rotary vane to move a specific volume of fluid through the system. Both types of pumps are used in fire sprinkler systems, and the choice between them depends on the specific requirements of the system. Centrifugal pumps are often used in larger systems where high flow rates are needed, while positive displacement pumps are better suited for systems that require a consistent flow rate over a wide range of pressures. Other factors to consider when selecting a pump for a fire sprinkler system include the type of water supply, the pressure and flow requirements of the system, and the size and layout of the building