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Not all businesses have the same needs for a fire suppression system. In some cases, a regular wet sprinkler would be too ineffective or even dangerous. For areas that have a lot of flammable materials, a foam fire suppression system is the way to go.

Foam fire suppression is composed of foam concentrate and water and air that mix together to create a foam blanket that keeps the fuel from burning. It all depends on the right foam concentrate and discharge device.

The foam blanket’s thin layer stops oxygen from getting into the fuel fire, which helps to reduce both the vapor and the fire. The System is designed as per NFPA.

Foam Suppression System Variations

Foam fire suppression systems are classified by high, medium, or low expansion; Each system offers a different removal process depending on the application areas.

In a high expansion foam system, the foam expands from 100: 1 to 1000:1, and air or other non-combustible gas expands range spontaneously or forcefully. This high-expansion foam produces superior depth and less wet coverage with large air bubbles. It is very light and can quickly fill an extended enclosure. A small amount of water produces a large amount of foam in a short time and extinguishes the fire by extinguishing the fire.

The high expansion system is applicable to large enclosed spaces where an overall anti-flood system is always required to extinguish the fire, which is not suitable for outdoor spaces. Mainly used in warehouses, hangars, and liquefied natural gas ponds.

In the medium expansion foam system, the expansion ratio is 10:1 to 100:1, very useful for small areas. This system can produce a large amount of precise foam in a short time. It creates a thick blanket 2 feet deep on the flammable fuel/chemicals and separates the fuel from the oxygen. In addition, the existing water provides a cooling effect on the fire. Therefore, extinguishing fire as well as smoke is used in oil refineries, chemical production areas, municipal fire departments, and solvent storage areas.

In a low-expansion foam system, the expansion ratio of the foam is 10:1 creating a very wet foam blanket with small and very dense foam bubbles. The foam shell is quite durable and creates a solid cover. It separates fuel from oxygen through the process of asphyxiation. In addition, an adequate amount of existing water will produce a flame-cooling effect.

The discharge occurs through the sprinkler, nozzle, screen, and foam generator and provides high-density foam over long throw distances as well as overhead. Low-expansion foam is not sensitive to wind or rain and is used in hydrocarbon fires, including storage tanks, on ships, refineries, rooftop heliports, and production areas.

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Extinguishment Principle

We know that fire is caused by heat and fuel, as well as oxygen and chemical reactions. To extinguish a fire, any one of these elements must be cut out, so foam systems mainly affect oxygen.

First, a foam blanket forms over the combustible fuels, separating them from oxygen, thereby smothering oxygen.

Then, the solution’s water absorbs heat and cools the combustible fuels and substance surfaces very quickly by the cooling effect, thus preventing reignition.

Foam blankets also effectively suppress the vapors of combustible liquids and dilute their vapor phase concentration.

Working Principle

The foam system consists of storage tanks (bladder tanks) with built-in measuring devices that contain the foam concentrate and are connected to a ready-to-use discharge system in the event of a fire.

The foam quickly concentrates to extinguish the fire, creating a thin film of water. For maximum effectiveness, the correct amount of foam concentrate should be mixed with water.

The primary extinguishing agent in a foam fire suppression system is water-film-forming foam (AFFF). It requires some energy to make high-quality firefighting foam. Typically, 1% and 3% foam concentrates are used in hydrocarbon fires.

If the foaming tank contains 3% foaming agent, that is, for 100 gallons of foam solution, 3 gallons of foaming agent should be used with 97 gallons of water in the solution.

Dosing devices release the appropriate amount of concentrate into the water supply based on the solution required and based on a range of flow rates and pressures.

Foam solutions are applied to flammable fires by vacuum or vacuum equipment. The aspirator contains air and mixes with the foam solution inside the unit. Furthermore, equipment without an air intake cannot do so.

Foam dispensers vary depending on application characteristics and requirements, and may include foam compatible sprinklers, foam monitors, foam manufacturers, foam chambers, and foam generators. , hand-held nozzles, etc.

The foam suppression system works on the overflow system to quickly introduce water into the system. The overflow valve is the water control valve of the whole hydraulic or electric quick discharge system.

The foam discharge system can automatically discharge the foam and aqueous solution through the discharge device through the precise cross-area detection system. Therefore, there is no chance of triggering false and incorrect alarms in the system. 


Foam fire suppression systems are ideal for large areas that need to be filled quickly if there is a risk of fire. The system automatically extinguishes the fire by extinguishing the fire.

This system is more effective on hot fires than traditional sprinklers and offers the greatest benefit in preventing mass property loss.

The main feature of the foam system is the foam blanket which creates an effective barrier between the fuel and the fire.

It is less toxic, causing less water damage to structures and tools, but does not apply to electrical equipment. Also, one should be careful during cleaning after erasing.

If your plant handles flammable liquids or power generation equipment, a foam fire suppression system can be an important element of keeping your space safe. 

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You can effectively use EUROSAFE foam fire suppression systems for fire protection in large hazardous installations, including power plants, refineries, oil and gas, chemical, and industrial facilities.

Processing Areas, Petrochemical Tank Farms,  Hangars, Marine Applications, Storage Facilities, and Warehouses. , and Similar Entities to protect lives, and investments, and ensure continuity of operations.

Foam Suppression System
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Fire suppression systems play a crucial role in preventing and mitigating the damage caused by fires. By swiftly detecting and suppressing fires, these systems protect lives, properties, and valuable assets. This article explores the different aspects of fire suppression systems, including their types, working principles, benefits, considerations for installation, applications, maintenance, and more. Read on Eurosafe to discover how fire suppression systems work and why they are essential for maintaining safety in various environments. All Systems are NFPA Compliance.

Product SKU: ES01-0100

Product Brand: EUROSAFE

Product Currency: USD

Product Price: 100

Price Valid Until: 2025-03-31

Product In-Stock: InStock

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