exceed the operating pressures, and the methods of providing the needed pressure are different. At lower pressure, centrifugal pumps (like those used by traditional sprinkler systems) are capable of providing the needed pressures for the system. At high pressures, the water can either be supplied by gas driven or pump driven systems. Gas driven system consist of a standalone water tank in a metal cylinder connected to a high pressure gas. When the system is activated, the high pressure gas is fed into the water tank and pushes the water through the piping. The typical operating pressures for this type of system starts around 140 bar and decrease to 30-50 bar. The high pressure pump systems typically contain multiple positive displacement pumps that work in tandem, depending on the number of nozzles that activate, to provide the needed pressure and water flow