Fire is the result of a chemical reaction between oxygen in the atmosphere and combustible material. Three essential elements involved in producing fire are heat, oxygen, and fuel. To extinguish the fire, effective removal of one of these elements is crucial. Fire extinguisher is an important equipment to fight fire at an initial stage. Let us understand the working of stored pressure fire extinguishers.
Stored pressure fire extinguishers are metal cylinders filled with pressurized extinguishing agents. The release valve holds the compressed gas from escaping until operated. The tamper seal and stainless-steel safety pin prevent the accidental closing of the operating lever of the valve.
· The first step is to break a tamper seal and pull out the safety pin. Now the extinguisher is ready for operation.
· The user aims at the base of the fire and squeezes the operating lever.
· The operating lever has an actuating rod, which presses the spring-mounted valve down to open the passage to the discharge channel.
· The compressed pressure then escapes, and the propellent applies downward pressure on the fire extinguishing media.
· It drives the extinguishing agent up the siphon tube, flows through the discharge hose, and comes out of the nozzle with considerable force.
· The operator moves the stream with a sweeping motion to extinguisher the fire.
The video displays the working of a stored pressure fire extinguisher in simple steps for understanding.
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26 окт 2024
