Foam Extinguishers

Foam fire extinguishers are part of our firefighting equipment range and are essential for tackling Class A (solid combustibles such as wood, paper and textiles) and Class B (flammable liquids) fires. Foam extinguishers work by forming a blanket over the burning material, isolating it from oxygen and cooling the surface, thereby preventing re‑ignition. They are recommended for use in a variety of environments with mixed fire risks.

Advantages of foam extinguishers:

1. Effective on Class A and B fires: Foam extinguishers are particularly effective on fires involving solid combustibles and flammable liquids, making them suitable for a wide range of hazards. The foam creates a seal over the fuel surface, smothering the fire and preventing spread.

2. Cooling and smothering action: The foam cools the burning surface, reducing its temperature and stopping the combustion process. It also isolates the material from oxygen, interrupting burning and helping to prevent re‑ignition.

3. Applicable across diverse environments: Thanks to their ability to tackle Class A and B fires, these extinguishers are suitable for commercial, industrial and residential buildings.

Disadvantages and considerations:

• Residue after use: While less abrasive than powder, foam can leave traces on treated surfaces and may require cleanup—especially in areas with sensitive electronics or where hygiene is a priority.
• Limitations on electrical fires: Foam extinguishers are not recommended for live electrical equipment, as the agent may conduct electricity and endanger the operator.

Typical applications:

1. Commercial buildings and offices: Ideal where risks arise from solid combustibles and flammable liquids, such as furnishings, paper or office equipment.

2. Warehouses and industrial areas: Recommended for storage zones with flammable liquids or other combustibles; commonly used in factories and workshops.

3. Vehicles and transport: Suitable for vehicles and trucks where flammable liquids and solid combustibles are present, including transport of hazardous substances.

How does a foam extinguisher work?

Foam extinguishers discharge a liquid agent that expands into foam on contact with the fire. This foam blankets the burning materials and forms a protective layer that separates the fuel from oxygen. At the same time, it cools the surface, helping to prevent re‑ignition. This mechanism is highly effective for fires involving flammable liquids such as petrol, oils and solvents.

Usage recommendations:

1. Proper training: As with all extinguishers, designated users should be trained to operate foam units safely and effectively.

2. Do not use on live electrical fires: Foam extinguishers are not suitable for energised electrical equipment; assess risks and use a suitable agent (e.g., CO₂) for electrical fires.

3. Regular inspections: Ensure extinguishers are checked periodically for functionality and compliance. Verify cylinder integrity and the agent’s pressure.

Compliance with safety standards:

All foam extinguishers in this category comply with relevant national and international fire safety regulations and are certified for use in a variety of environments, ensuring conformity with the latest quality and safety standards.