Fire Protection Fluid is a fluid

Fluid

In physics, a fluid is a substance that continually deforms under an applied shear stress. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids....

 that acts like water

Water

Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state . Water also exists in a...

, looks like water, and flows like water, but does not get things wet in the same way as water. When discharged from a fire apparatus, it converts to a gas, due to its thermodynamic properties and suppresses fire when used at its extinguishing concentration to remove heat. It is often used to extinguish fire

Fire

Fire is the rapid oxidation of a material in the chemical process of combustion, releasing heat, light, and various reaction products. Slower oxidative processes like rusting or digestion are not included by this definition....

s as part of Automatic fire suppression

Automatic fire suppression

Automatic fire suppression systems control and extinguish fires without human intervention.According to the National Fire Protection Association, there were 1,602,000 fires reported in the United States in 2005. There were 3,675 civilian deaths, 17,925 civilian injuries, and $9.2 billion in...

 systems, especially in facilities housing electronic equipment and will not damage electronics

Electronics

Electronics is the branch of science, engineering and technology that deals with electrical circuits involving active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies...

in the way that water will.