What Is a Class C Fire? How to Safely Extinguish Flammable Gas Fires
- November 27, 2025
When it comes to fire safety, most people only think about electrical fires or something burning in the kitchen. But gas-related fires are far more dangerous. And that’s exactly what we call a Class C Fire. These fires spread faster, explode without warning, and need the right method to put them out. You can’t splash water on them or use any random fire extinguisher.
If you’re running a factory, warehouse, hotel, or even a small workshop, you must know what a Class C Fire is and how to handle it safely. And by the time you finish reading this, you’ll know exactly which extinguisher is right and what you should avoid during gas fires.
What Is a Class C Fire?
In simple words, a Class C Fire is a fire that starts because of flammable gases. For example, LPG, CNG, propane, butane, and similar gases. These gases leak from cylinders, pipelines, burners, compressors, or storage units. And once a spark touches them, the fire becomes uncontrollable within seconds.
This is why every fire safety guide mentions classes of fires. Because each type needs a different extinguisher. And in short, Class C fire involves gas-based fire.
Causes of Class C Fires
Now, let’s take a look at the possible causes of the Class C fires. Most of the time, it’s due to:
- Gas leakage from cylinders, valves, or pipes
- Faulty regulators or loose fittings
- Sparks from electrical switches or machinery
- Improper storage of LPG or CNG cylinders
- Open flames near gas equipment
- Poor ventilation, causing gas to collect in one spot
Why Are Class C Fires Dangerous?
Class C fires are risky because:
- Gas burns extremely fast
- Fire can spread through pipelines
- There is always a chance of a blast
- One small mistake can turn into a huge accident
Also, these fires can’t be controlled with water. If you pour water, the fire may rise even more or spread to another area. This is why having the correct Class C fire extinguisher is important.
How to Safely Extinguish a Class C Fire
Shut the gas supply first: If possible, close the main valve. Cutting the gas flow stops the fire from spreading.
Use the correct extinguisher: You need an extinguisher made for gas-based fires, like:
Do NOT use water: People panic and throw water. Please don’t. Gas and water never mix when it comes to safety.
Maintain distance: Stand a few steps away and aim at the base of the fire, not the flames.
Call emergency help: Even after the fire is controlled, call the fire brigade in order to check for hidden leaks.
Kanex Fire Solutions Limited manufactures certified extinguisher for Class C Fire, so you get proper protection for gas-based hazards in homes, factories, and commercial areas.
Prevention Tips for a Class C Fire Extinguisher
If you run a shop, hotel, or industrial unit, get professional servicing done from time to time. This reduces the risk of leaks and accidents.
Here are some simple things you should follow at home or at work:
- Check gas cylinders and valves regularly
- Don’t keep LPG cylinders near heat
- Ensure proper ventilation
- Never ignore a gas smell
- Use ISI-marked regulators and pipes
- Get annual maintenance done
Conclusion
You should not take a Class C fire lightly, as gas fires can turn dangerous very quickly if you don’t know how to handle them. That’s why you should always have a Class C fire extinguisher nearby. Make sure to get your gas equipment checked once in a while. If you’re looking for certified fire extinguishers or if you want any kind of guidance, you can always reach out to Kanex Fire Solutions Limited. We provide trusted fire safety products in India. You may check our other products here.
