a deluge system (automatic high velocity water spray system) is a fixed fire protection system, which totally floods an area with pressurized water through a system of piping with open nozzles & sprinklers. the inlet & outlet are separated from the priming chamber by the valve chamber & diaphragm.
the pressure is trapped in the priming chamber & holds the clapper on the seat due to the differential area. when the pressure is released from priming chamber faster than it is supplied through the restricted priming chamber line, the clapper move & allow the inlet water supply to flow through the outlet into the system and associated alarm device. as soon as the deluge valve opens the water shall flow through the piping to flow water to all water spray nozzles mounted on the piping around the transformer.
they are commonly used in fixed fire protection systems whose pipe system is empty until the deluge valve distributes pressurised water from open nozzles or sprinklers. deluge valve used for fast application of water in a spray system. while in ‘set’ position, water pressure is transmitted through an external bypass check valve and restriction orifice from the system supply side to the top chamber , so that supply pressure in the top chamber acts across the diaphragm operated clapper which holds the seat against the inlet supply pressure because of differential pressure design. the top chamber pressure cannot be replenished through the restricted inlet port, thus it reaches less than half the supply pressure instantaneously and the upward force of the supply pressure lifts the clapper allowing water to enter the system piping network and alarm devices the basic trim or type is required on deluge valve regardless of the release system. the pilot line is connected directly to the top of positive drain actuator (pda). the bottom of pda is connected to the top chamber of the deluge valve.
the direct drain of pda start when the top chamber pressure of deluge valve reaches approximately 0.5 kg/sq.cm. to actuate a deluge valve electrically , a solenoid valve is provided to drain the water from the top chamber of the deluge valve. this trim is supplied with the sprinkler alarm bell, which bells on actuation of the deluge valve. a test valve is provided to test the normal operation of the sprinkler alarm bell. they can also be used to cool surfaces to prevent deformation or structural collapse. (optional) dear mr reddy in automatic activation of deluge system via solenoid , why drain water is required to operate deluge valve
the sprinkler heads on a deluge system are fused together and operate as one when activated. the valve is opened when activated by heat or smoke a deluge system (automatic high velocity water spray system) is a fixed fire protection system, which totally floods an area with pressurized water through deluge systems deliver large quantities of water, over a large area, in a relatively short period of time. they are commonly used in fixed fire protection, deluge system diagram, deluge system diagram, deluge system pdf, deluge valve working principle pdf, deluge system testing.
a deluge fire protection system has unpressurized dry piping and open sprinkler heads. the system is directly connected to a water supply and when the system is activated, a deluge valve will release the water to all the open sprinkler heads. the valve is opened when activated by a heat or smoke detection system. working of deluge valve system the deluge valve is actually a quick release diaphragm valve. it has three chambers. when the valve is in the deluge systems deliver large quantities of water, over a large area, in a relatively short period of time. they are commonly used in fixed fire protection a deluge system is a fixed fire protection system in which the release and alarm test valve for manual operation of these trim valves., types of deluge system, deluge valve operation ppt, deluge system ppt, deluge sprinkler system activation, deluge valve symbol, viking deluge valve, deluge valve assembly, where are deluge sprinkler systems used, deluge valve manufacturer, deluge valve tyco.
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