How does a sprinkler work?
A sprinkler head comprises a thermal element and deflector plate on an automatic sprinkler system.
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Sealing assembly
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Frame
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Temperature sensitive glass bulb
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Deflector Plate
Each sprinkler head contains a valve that opens to release water when a heat-sensitive element reaches a pre-determined temperature. Usually this will be at least 68°C, however, sprinkler heads that operate between temperatures of 57–230°C are also available.
Sprinkler heads are located at ceiling height (or in racks or on walls depending on the type of premises protected) – around one for every 9–15m² – and connected to a water supply. Once a sprinkler head has been activated it delivers water directly onto the fire, dousing the flames and reducing the spread of fire.