Sprinkler System Working Principle

When a blaze ignites the air directly above it heats rapidly.

Sprinkler system working principle.

Principle of operation normally a wet pipe automatic fire sprinkler system is fully charged with water coming from a known reliable water supply. The cap valve are held tightly against the orifice by a system of levers and links or other releasing devices pressing down on the cap and anchored firmly by struts on the sprinkler. Note the red liquid alcohol in the glass bulb. Each sprinkler is nothing but a faucet or tap as they call it in some countries a hole in the pipe through which water can escape into the building below.

A sprinkler system is a network of pipes running through the ceiling of a building holding water under pressure. The installation is pressurised with the alarm valve secured in the open position. The sprinkler heads must detect a high enough temperature usually between 135 and 165 degrees fahrenheit 57 to 74 celsius. Principle of operation under normal conditions water discharged from an automatic sprinkler is restrained by a cap or valve.

Sprinkler heads operate individually. Not just any heat source will trigger a sprinkler system to activate. This hot air rises and spreads along the ceiling.