What is the liquid in a fragile bulb used in a fire sprinkler?

Answer 1

It is a colored glycerin or alcohol solution that will not freeze.

The colors are indicative of the temperature rating of the sprinkler head. (See attached link)

Answer 2

The fluid is patented.

The normal simple sprinkler utilizes a frangible glass bulb. The glass bulb consists of an accurately controlled amount of special fluid hermetically sealed inside of a precisely manufactured glass capsule. This glass bulb is specially constructed to provide fast thermal response.

At normal temperatures, the glass bulb contains the fluid in both the liquid phase and in the vapor phase. The vapor phase can be seen as a small bubble. As heat is applied, the liquid expands forcing the bubble smaller and smaller as the liquid pressure increases. Continued heating forces the liquid to push out against the bulb, causing the glass to shatter, opening the waterway and allowing the deflector to distribute the discharging water

Answer 3

R U ASKING FOR FIRE SPRINKLER/EXTENGUISER?

Fire sprinklers are an active fire protection measure subject to stringent bounding. They are connected to a fire suppression system that consists of overhead pipes fitted with sprinkler heads throughout the coverage area. Fire sprinkler systems for high-rises are usually also equipped with a fire pump, and a jockey pump and are tied into the fire alarm system. Although historically only used in factories and large commercial buildings, home and small building systems are now available at a relatively cost-effective price.

Each sprinkler head is held closed independently by heat-sensitive seals. These seals prevent water flow until a design temperature is exceeded at the individual sprinkler heads.

Each sprinkler activates independently when the predetermined heat level is reached. The design intention is to limit the total number of sprinklers that operate, thereby providing the maximum water supply available from the water source to the point of fire origin.

Answer 4

Water

Answer 5

Actually they dont use that anymore...

They use a Lead weld that when it heats up it melts and cause the sprinkler to trigger.

Answer 6

Ether being the fluid. Commonly called an ether bulb.

Answer 7

Probably some chemical that expands in heat.

Answer 8

Hamster sperm