Fire Sprinkler Heads are individually activated directly by the heat of the Fire.
Fire Sprinklers use a device which activates them when they reach a certain temperature. These are a fusible substance, such as solder, a substance that will reliably melt, or a glass bulb that contains a liquid that will burst the bulb when heated, which is typically 74°Celsius.
The result is that any of these activators will be destroyed
when heated to a certain level, allowing water pressure to push out
a plug and causing water to flow out through the sprinkler.
The diffuser breaks up the water flow into carefully controlled
droplets, which penetrates the fire plume and cools the burning
material below its ignition point, thus putting out the Fire.
Only Sprinklers directly over the fire are activated.
The Sprinklers are connected to pipe work, which is supplied either
from the water mains or from a storage tank via a pump.
When a Sprinkler activates the flow of water in the pipe work,
operates a flow switch which triggers the fire alarm system.
