Foam Chamber

The EMACO Foam Chamber is a fixed, end-of-line foam application device used for protecting vertical, open-top flammable liquid storage tanks. UL Listed and engineered for consistent performance, it directs expanded foam onto the fuel surface without causing agitation, ensuring safe suppression of Class B fires.

Designed according to international fire protection standards, the Foam Chamber works seamlessly with foam proportioning systems, foam makers, and storage tank fire protection networks. Its corrosion-resistant construction, removable vapour seal, and high expansion efficiency make it ideal for heavy-duty industrial environments such as refineries, terminals, chemical processing facilities, and fuel depots.

Key Features

End-of-Line Design: Fixed foam chamber for flammable liquid storage tanks.
Durable Materials: Carbon steel or stainless steel construction.
UL Certified: Ensures proven safety and performance.
Integrated Foam Maker: Provides consistent foam expansion.
Vapour Seal: Blocks vapors from entering the piping system.
Standard Pressure: Suitable for ~7 bar industrial networks.
Gentle Discharge: Applies foam without agitation.
Easy Maintenance: Removable cover for servicing components.

This robust design guarantees reliable operation in demanding petrochemical and industrial settings where rapid and controlled foam discharge is essential.

Storage tanks containing flammable liquids require specialized firefighting devices that can apply foam safely and efficiently. The EMACO Foam Chamber plays a crucial role in tank fire protection by delivering expanded foam onto the burning liquid surface without disturbing it—a critical requirement for preventing flare-ups or violent reactions.

Unlike portable foam equipment, the Foam Chamber is a permanently installed system connected to the facility’s foam proportioning network. When activated, foam solution enters the chamber, expands through the foam maker, and is gently directed onto the tank surface through a deflector.

Each EMACO Foam Chamber is engineered to handle harsh industrial conditions, offering long-term reliability, effective vapour sealing, and high-quality foam generation. Its design supports both hydrocarbon and polar-solvent foam concentrates, making it suitable for modern industrial hazards.

How the EMACO Foam Chamber Works

1. Foam Solution Supply

Foam solution from the proportioning system enters the foam chamber inlet at the required operating pressure.

2. Foam Maker Aeration

Inside the chamber, the foam solution passes through a UL-listed foam maker, where venturi-induced air mixing creates expanded foam with a stable bubble structure.

3. Vapour Seal Operation

A vapour seal separates the tank interior from the foam piping system. It opens automatically when pressure is applied and closes after discharge, preventing flammable vapours from flowing backward.

4. Controlled Discharge Into Storage Tank

The expanded foam exits through the discharge outlet and is deflected onto the tank wall, allowing it to flow gently onto the liquid surface.
This prevents agitation and helps create a thick foam blanket to smother the fire and prevent re-ignition.

5. Consistent Foam Quality

Chamber geometry and airflow pathways are optimized to minimize turbulence and produce high-grade, stable foam even under variable operating conditions.

Technical Specifications

MODEL NUMBER	APPROVAL	MATERIAL	INLET X OUTLET SIZE	Range of flow from 150 to 3300litres per minute at 2.74 to 6.86 bar inlet pressure
E0303-C65	UL/FM	Carbon Steel	2.5’’x 4’’ (65mm x 100mm)
E0303-C80	UL/FM		3’’x 6’’ (80mm x 150mm)
E0303-C100	UL/FM		4’’x 8’’ (100mm x 200mm)
E0303-C150	UL/FM		6’’x 10’’ (150mm x 250mm)
MODEL NUMBER	APPROVAL	MATERIAL	INLET X OUTLET SIZE	Range of flow from 150 to 3300litres per minute at 2.74 to 6.86 bar inlet pressure
E0303-CS65	UL/FM	Stainless Steel, Vapor Seal Glass/Graphite	2.5’’ x 4’’ (65mm x 100mm)
E0303-CS80	UL/FM		3’’x 6’’ (80mm x 150mm)
E0303-CS100	UL/FM		4’’x 8’’ (100mm x 200mm)
E0303-CS150	UL/FM		6’’x 10’’ (150mm x 250mm)

Applications & Use Cases for Foam Chamber

Fuel Storage Tanks

Primary application in protecting vertical, open-top or fixed-roof tanks storing gasoline, diesel, solvents, and other flammable liquids.

Refineries & Petrochemical Industries

Used for tank fire suppression in high-risk zones where rapid foam discharge is essential.

Chemical Processing Plants

Ideal for environments storing alcohols, chemicals, and hazardous liquids requiring low-agitation foam application.

Bulk Storage Terminals

Ensures safe foam delivery to large capacity storage areas, pipeline terminals, and tank farms.

Marine & Offshore Storage

Effective for shipboard storage tanks, offshore platforms, and dockside industrial tank facilities.

Maintenance and Care

Periodic Inspection

Check the chamber body, vapour seal, and foam maker for corrosion, mechanical wear, or blockage.

Vapour Seal Integrity

Ensure the vapour seal is properly aligned and functioning to prevent backflow of flammable vapours.

Nozzle & Deflector Cleaning

Remove debris and deposits from the discharge section to maintain uniform foam flow.

Hydrostatic Testing

Perform pressure tests to ensure structural integrity and leak-free operation.

Corrosion Protection

Maintain exterior coating or choose stainless steel versions for corrosive environments like marine or chemical sites.

Regular inspection ensures long-term performance and safety compliance in industrial operations.

Why Choose EMACO Foam Chamber

UL-Listed Design

Tested and certified for reliability, ensuring dependable performance during critical fire suppression operations.

Superior Foam Expansion

Integrated foam maker provides high-quality, stable foam essential for tank firefighting.

Safe Application Method

Designed to deliver foam gently without disturbing the flammable liquid surface—essential for Class B tank protection.

Heavy-Duty Construction

Built with industrial-grade materials to withstand heat, corrosion, chemical exposure, and outdoor conditions.

Easy Maintenance

Removable inspection covers and accessible internal components simplify service and reduce downtime.

Durability & Lifespan

When properly maintained, the EMACO Foam Chamber offers a lifespan exceeding 15 years.
Its corrosion-resistant body, high-grade foam maker, and sealed design ensure long-term performance even in harsh petrochemical environments. Routine inspection and cleaning help maintain optimal foam quality and discharge characteristics.

1. What is the main function of a Foam Chamber in fire protection?

A Foam Chamber is designed to safely apply expanded foam to flammable liquid storage tanks. It ensures foam is discharged gently along the tank wall, preventing agitation of the burning liquid. This reduces fire intensity, suppresses vapors, and forms a stable foam blanket to stop re-ignition. It is essential for Class B tank fire protection systems.

2. Why is a vapour seal important in a Foam Chamber?

The vapour seal prevents flammable vapors inside the storage tank from travelling back into the piping network, where they could ignite or cause pressure hazards. During operation, it opens automatically to allow foam to pass, and once flow stops, it closes again to isolate vapors. This safety feature ensures both operational efficiency and system integrity.

3. Can the Foam Chamber handle different foam concentrates?

Yes. EMACO Foam Chambers are compatible with AFFF, AR-AFFF, and various synthetic foams, including fluorine-free options. The foam maker design ensures proper aeration regardless of foam type, making it suitable for both hydrocarbon and polar-solvent fire risks.

4. How does the Foam Chamber ensure safe foam application into the tank?

The chamber uses a built-in foam maker and deflector to introduce foam gently onto the tank wall. This method avoids splashing, agitation, or mixing of the burning liquid, preventing violent reactions. The controlled discharge helps build a stable and thick foam blanket essential for effective extinguishment.

5. What maintenance is required to keep the Foam Chamber working reliably?

Maintenance typically includes checking the vapour seal, cleaning the foam maker, inspecting the deflector, and verifying that no corrosion or obstruction has formed inside. Periodic hydrostatic tests ensure pressure integrity, while surface coating should be maintained to protect against harsh industrial environments.

Certification and Accreditation Partners

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