Fire sprinklers work because high heat triggers the sprinkler system. When a blaze ignites, the air directly above it heats rapidly. This hot air rises and spreads along the ceiling. … When the liquid expands, it shatters its glass confines and the sprinkler head activates.

Do all sprinklers go off at once?

“When a fire occurs, every sprinkler head goes off.” Sprinkler heads are individually activated by fire temperatures in excess of 155°. Residential fires are usually controlled with one sprinkler head.

What is a sprinkler and how does it work?

The basic principle of a sprinkler system: The nozzles open separately when heated by fire or hot flue gases. Extinguishing water is sprayed selectively on the source of the fire. Water is also sprayed on the surrounding area and therefore prevents the fire from spreading.