Fire Sprinkler heads are part of an automatic fire suppression system. They are designed to react to heat . Each sprinkler head contains a glass bulb filled with a glycein-based liquid, which expands when heated. When a fire occurs, the heat causes the liquid in the bulb nearest the fire occurs, the heat causes the liquid in the bulb nearest the fire to expand, breaking the glass. This breakage opens the valve and releases the water from sprinkler head, spraying it onto the fire to extinguish or