![]() Extinguishing Agent: The substance that limits or suppresses the spread of the fire.A hose, typically found on extinguishers that are heavier than 3 kg, further allows refined directing of the flow as it leaves the extinguisher. Nozzle and/or Hose: A nozzle directs the direction of the extinguishing agent as it leaves the tank.Stored pressure fire extinguishers may also contain a pressure gauge. ![]() It consists of a machined body made of metal bar stock on a lathe (or plastic injected molded part for economy versions), a handle that allows for grasping and lifting and transporting the extinguisher, a metal locking pin to prevent against accidental discharge, Plastic tamper seals to keep the locking pin from falling out, a metal release lever and a dip tube through which the agent is drawn up for expulsion. Valve Assembly: The function of the valve is to control or regulate the flow of the extinguishing agent.Cylindrical Tanks: Flat on the bottom and dome shaped on top, cylindrical steel tanks contain the extinguishing agent and the propellant necessary to provide the pressure to forcibly push the fire extinguishing agent out creating a spray.Regardless of agent used in the extinguisher, the parts and components of the a fire extinguisher used to contain and spray the agent are similar. a hose for directing the extinguishing agent.a safety mechanism comprised of a tamper seal and a pull pin.a release system comprised of a squeeze handle, a v alve assembly, and a release lever.a cylindrical tank containing an extinguishing agent and a propellant.Most fire extinguishers are comprised of: ![]() Understanding that certain fires were not effectively suppressed with water, that water conducts electricity making water an unacceptable agent in fighting electrical fires, that a forceful stream of water may splatter combustible materials, and that in cold temperatures the water may freeze, led those seeking to improve fire extinguishing capacity and effectiveness to develop new agents – wet chemical, dry chemical, halon, and carbon dioxide. This fundamental principle of eliminating an element of the fire triangle assuredly has a distant history, but in modern times a tool to suppress fire, known as a fire extinguisher, began as a pressurized vessel that sprayed water. ![]()
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