👉 Relief fluid, also known as fire suppression fluid, is a specialized liquid or gas used in fire protection systems to control and extinguish fires. It works by displacing oxygen, cooling the combustion process, or forming a protective barrier that prevents fuel from reaching the flames. Typically, relief fluid is non-toxic and environmentally friendly, making it suitable for use in sensitive areas. It's commonly found in fire sprinkler systems, where it is pumped into the system during a fire alarm, creating a stream that helps to smother the flames and reduce heat, thereby preventing further spread of the fire.