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Centrifugal engine-driven pump / firefighting - Foc series
As a fire-extinguishing agent, water acts by cooling the source of combustion, and can be applied by various methods to ob tain the greatest degree of heat removal. Systems such as sprinklers, water curtains, hydration columns, fire hydrants, etc. all require a water supply permanently available from a pressurized network.In the event of a fire, either the opening of a fire hydrant or the automatic initiation of a fixed sprinklers installation usually initiates the demand for water. The sudden fall in pressure in the fire system rising main causes the main pumps to automatically start and provide the required flow of water to the points of application. Most systems have a small, electrically driven auxiliary or jockey pump, which automatically maintains the pressurization of the fire fighting system and compensates for small leakages in the system. The auxiliary or jockey pump operates automatically under pressure switch control.