What Are the 4 Types of Fire Extinguishers? A Complete Guide to Their Uses and Locations

Fire Extinguishers are essential safety devices for any large-scale establishment, whether it’s a housing complex, school, corporate office, or warehouse. They not only help fight fire hazards but also ensure regulatory compliance for various industries.

If you are looking for a reliable fire extinguisher for your school, housing complex, or workspace, and wondering which is the best for your needs, continue reading! In this guide, we will explore the 4 main types of fire extinguishers, their uses, and how to choose the right one for optimal fire safety.

About a fire extinguisher

Before you get your answer for - 'What are the 4 types of fire extinguishers?’, let’s understand fire extinguishers at first. This will help you have a better grasp of the concept. In simple terms, fire extinguishers are small and portable devices that are used to extinguish small-scale fires. The extinguishers were first patented by Ambrose Godfery in 1723. Traditional fire extinguishers usually work by releasing a special agent (typically carbon dioxide, water, or foam) over the burning area to cool down the flame and cut down the oxygen supply to extinguish the fire completely.

The cylinders of fire extinguishers are made from heavy-duty materials that are durable enough to withstand high pressure and reactive agents. Modern fire extinguishers are typically constructed with high-quality steel and have an average capacity ranging from 1.5L to 220L, with a bar filling pressure between 150 to 300.

Four types of Fire Extinguishers

Now that you have understood what a fire extinguisher is, you can finally move forward to discuss - 'What are the 4 types of fire extinguishers?’ in detail. This includes their overview, label, working method, and other essential aspects about each extinguisher-

1. Water extinguishers

• Label colour: Bright Red
• Over view: Water fire extinguishers or water extinguishers are the most common type of fire extinguishers that are widely used across industries. They belong to the class A fire extinguishers. Most establishments will require either foam or water extinguishers.
• work: Water extinguishers have a cooling effect on the burning area to restrict fuel supply, leading the flame to burn more slowly and eventually extinguish the fire.
• Used for: Organic materials such as paper and cardboard, fabrics and textiles, wood and coal. It is not used for electrical equipment, kitchen fires, flammable liquids or gases.
• Where to locate water extinguishers:You can identify them by the exit on the floor where class A fire hazards have been identified. Businesses/premises that need water extinguishers: Offices, Schools, Hospitals, Warehouses, Residential complexes

2. Foam extinguishers

• Label colour: Cream
• Overview: Foam fire extinguishers are also common types of fire extinguishers. They belong to the class B fire extinguisher. However, they can be used for class A fire hazards like water extinguishers.
• How does it work: Similar to the water extinguishers, foam extinguishers also have a cooling effect on the flame. Also, the foam creates a vivid barrier between the fuel and flame (for liquid flammables) to extinguish the fire.
• Used for: Organic materials such as Fabric and textiles, Paper and cardboard, Wood and coal, Flammable liquids (paint/petrol). However, they are not suitable for kitchen fire, electrical equipment, or flammable metal.
• Where to locate Foam extinguishers: Close to the exit, on the floor where class A and B fire risk has been identified. Businesses/premises that need Foam extinguishers.

3. Carbon Dioxide extinguishers

• Label colour: Black
• Overview: Carbon dioxide or CO2 fire extinguishers are primarily used for electrical fire hazards. They are the primary type of fire extinguishers used in computer server rooms. They are also used for class B fire hazards like flammable liquids, petroleum and paint.
• How does it work: Carbon dioxide fire extinguishers suffocate fire by displacing the oxygen supply that fuels the fire.
• Used for: Flammable liquids, like paint and petrol, and Electrical fires. However, it is not recommended for Kitchen fires, especially chip-pan fires, combustible materials like paper, wood, or textiles, and flammable metals.
• Where to locate Carbon Dioxide extinguishers:Usually found in places near fire risk and at the fire exit.
• Businesses/premises that need Carbon Dioxide extinguishers: Places that have electrical equipment, such as – Offices, Kitchens, Construction sites, Server rooms. All working vehicles should use 2kg CO2 extinguishers for regulatory compliance.

4. Dry powder extinguishers

• Label colour: Blue
• Overview: Standard dry powder extinguishers are also known as ABC fire extinguishers, as they can handle all A, B, and C class fire hazards. However, they are not recommended for enclosed spaces. The powder molecules can be easily inhaled. Also, the residue can be quite difficult to clean post-application.
• How does it work: Dry powder extinguishers work by creating a visible barrier between fire and oxygen supply to prevent the fire and prevent the recurrence of the fire.
• Used for: Organic materials like - Paper and cardboard, Fabrics and textiles, Wood and coal. In addition to that, it also used – Flammable liquids, like paint and petrol, Fires involving electrical equipment up to 1000v, Flammable metals, such as titanium and magnesium, Flammable gases, like liquid petroleum gas (LPG) and acetylene.
• Where to locate Dry powder extinguishers: Near the source of fire risks.
• Businesses/premises that need Dry powder extinguishers: Businesses using flammable gases for chemical processes, Premises where welding and flame cutting take place, Garage forecourts, Liquid petroleum gas (LPG) dispensing plants, Premises with large, commercial boiler rooms.

Conclusion: How to Choose the Right Fire Extinguisher

In this blog, we have discussed the 4 types of fire extinguishers, including their functions, usage, and where they are most commonly found. At Technohead, we offer a wide range of fire extinguishers, including Water, CO2, Foam, and Dry Powder extinguishers, all available at cost-efficient prices to suit your safety needs.