Only the Sprinkler Closest to the Fire
Will Activate, Spraying Water Directly
on the Fire
Fire sprinklers are individually heat-activated and connected to a network of copper or steel pipe with water under pressure. When the heat of a fire raises the sprinkler to its operating temperature, usually between 135°-175°F, a fusible link or glass bulb will activate only that sprinkler over the fire, thereby releasing water only over the source of heat.
How They Work
How Much Water?
Fire sprinklers use far less water than fire hoses. Watch a short animated movie that demonstrates just how little.