What is a Fire Extinguisher?
A fire extinguisher is a portable
fire safety equipment or fire protection equipment used for extinguishing
fires. This device consists of a fire cylinder with a directional nozzle that
uses to direct a spray of water, chemically generated foam, inert gas, or fine
powder onto the fire at high pressure to put out and control even the small
fires. Fire extinguishers (firefighting equipment) are metal cylinders or
containers that contain different chemicals, depending on the application as
nitrogen used with dry chemical extinguishers and the air is used with water
and foam extinguishers.
What is Fire and its Classes?
Fire is a chemical reaction that
needs fuel, oxygen, and heat in order to burn. The chemical reaction of fire is
called combustion, which happens when fuel reacts with oxygen to release heat
energy. Either the combustion can slow or fast but it all depends on the volume
of oxygen available. Even the combustion outcomes in a flame are very fast and
called it as burning. The flames or fires occur when small particles of the
combustible material or fuel (wood, gasoline, flammable oil, electrical
equipment, etc.) are heated to the point of burning and shot upward.
There are several yet different
classes of fire-based primarily on the fuel source. Here is a list of different
classifications of fire.
Class A - fires connecting solid
materials such as wood, fabric, paper or textiles, trash, and plastics
Class B - fires connecting
flammable liquids such as petrol, diesel, kerosene, flammable oils, and certain
types of paint
Class C or Type C - fires
connecting gases and electrical components
Class D or Type D - fires
connecting combustible metals
Class E - fires connecting live
electrical apparatus (Technically ‘Class E’ doesn’t exit)
Class F or Type K - fire
connecting cooking oils such as in deep-fat fryers; liquid cooking materials
such as greases, cooking oils, vegetable fat, and animal fat.
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VariEx fire extinguishers are even portable devices and
used to apply an agent that will extinguish the burning fuel or remove oxygen
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extinguishers is inspected as per the International Safety & Quality
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extinguisher use on the VariEx brand can control the small fires quickly. It is
advisable to fix the fire extinguishers throughout every building on campus. To
properly use an extinguisher, you should know the types of fire extinguishers
and their uses.
Types of Fire Extinguishers and their uses as per Classes of Fire
There are mainly five different
types of fire extinguishers (fire extinguisher types) such as Water, Foam, Dry
Powder, CO2, and Wet Chemical extinguisher available to extinguish the fire.
There is not any single extinguisher type that works on all classes of fire.
Here is a list of fire
extinguisher classes or different types of extinguishers (details).
WATER FIRE EXTINGUISHER
Water type fire extinguishers are
the most common fire extinguisher used for class A fire risk. The water has a
cooling effect on the material or fuel, which is capable of extinguishing the
fire. These two categories of extinguishers, i.e., water spray and water mist.
Water spray extinguishers are fitted out with a spray nozzle that means a
greater surface area can be covered more quickly and put out the fire more
rapidly. Water mist portable extinguishers
consist of different types of nozzles, which release microscopic water
particles to create a wall of mist between the fire and the person using the extinguisher,
reducing the feeling of heat. Moreover, it is recommended to locate water type
extinguishers at the exit point of every floor where a Class A fire risk can be
Uses of water / A type
Houses and other buildings constructed of wood
or other organic materials
FOAM FIRE EXTINGUISHER
Foam type fire extinguishers or
class B fire extinguishers are one of the popular types of fire extinguishers
and used for Class B fire hazard or risk. Foam fire extinguisher use and also
works on Class A fires as they are water-based. Like the water extinguishers, mechanical
foam type fire extinguishers also have a cooling effect on the fuel, and the
foaming agent creates a barrier between the flame and the fuel for
extinguishing the fire. It is advisable to locate the foam extinguisher at the
exits on a floor where a Class A or Class B fire risks can recognize.
Uses of foam / Type B fire extinguishers:
Buildings where flammable liquids are stored
DRY POWDER FIRE EXTINGUISHER
(Class D Fire Extinguisher)
Dry powder type fire extinguishers
are also known as ABC & D fire extinguishers because as they used for class
A, B, and C fire risk. ABC powder extinguishers use on some electrical fires. However,
they are not perfect for use in enclosed spaces. Dry chemical powder
extinguishers are used to cool down even the Class D fires by forming a barrier
between the fuel and the source of oxygen.
Uses of dry powder / type A, B,
& C fire extinguishers:
Businesses using flammable gases for chemical
Premises where welding and flame cutting works
Premises with large, commercial boiler rooms
Liquid petroleum gas (LPG) dispensing plants
CARBON DIOXIDE (CO2) FIRE
Carbon dioxide type fire
extinguishers are also known as CO2 extinguishers that generally use for
electrical fire risks. They are also used to put out Class B fires (flammable
liquids, such as paint and petroleum). Carbon dioxide or water CO2 type
extinguishers work in such a way to suffocate fires by displacing the oxygen
the fire needs to burn. It is recommended to place the carbon dioxide fire
extinguishers and electrical fire extinguishers near to the source of the fire
exits and also in working vehicles.
Uses of carbon dioxide / CO2 type
Computer server rooms
WET CHEMICAL FIRE
EXTINGUISHERS (Class K Fire Extinguisher)
Wet chemical type extinguishers
are designed and used for Class F or Class K fire risks. This particular type of extinguisher can also
use on Class A fires (although it is more usual to have a foam or water
extinguisher for this type of fire risk). Wet chemical or type k fire
extinguishers create a layer of foam (has a cooling effect) on the surface of
the burning cooking oil or fat, preventing oxygen from fueling the fire any
Uses of wet chemical / K type /
kitchen fire extinguisher:
Hospital cooking areas, etc.
Fire Extinguisher in Bangalore
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Variexonline is one of the reliable
fire extinguishers companies and committed to providing a wide variety of
extinguishers in Bangalore. There are diverse categories of Fire Extinguishers
available in Bangalore marketplaces. ABC Powder Type fire extinguisher, Carbon
Dioxide Type fire extinguisher, DCP Type Fire Extinguisher Powder Type fire
extinguisher, Foam Type fire extinguisher, Water Type fire extinguisher,
Modular Type fire extinguisher, Class-K Type fire extinguisher, and Clean Agent
Type fire extinguisher are the name of the few.