Products

Low Expansion Foam System

Product Category:Fire Fighting System

The low expansion foam fire extinguishing system is an integral component of shipboard fixed fire extinguishing systems, featuring a foam expansion ratio not exceeding 20:1 (typically below 12:1).

The system is designed and type-approved in accordance with the International Code for Fire Safety Systems (FSS Code), the IBC Code, and relevant provisions of SOLAS Chapter II-2.

Low expansion foam systems are widely deployed on oil tankers, chemical tankers, and methanol dual-fuel vessels, primarily protecting **cargo oil/cargo chemical tank deck areas, machinery spaces, and methanol fuel-related area.
  • ComponentFunction
    Foam Concentrate Storage TankStores foam concentrate; capacity shall satisfy continuous discharge duration requirements
    Foam PumpTransfers foam concentrate to the proportioner
    ProportionerMixes foam concentrate with seawater at the designed ratio
    Fire Water Pump (Seawater Pump)Provides seawater for fire-fighting service
    Foam Monitor / Handline Nozzle / Sprinkler HeadFoam solution discharge terminals
    Piping and Control ValvesDelivers foam solution to respective protected areas
    Control SystemMonitors system status; supports remote / local operation


    System Features and Advantages

    Coverage and Smothering: Low expansion foam exhibits excellent flowability and spreading characteristics, rapidly forming a dense foam blanket on the burning liquid surface to effectively exclude oxygen.

    High Wind Resistance: With high density and good adhesion properties, low expansion foam is minimally affected by strong wind conditions, making it suitable for exposed open-deck areas.

    Effective on Class A & B Fires: Specifically engineered for extinguishing oil and chemical fires, delivering superior performance on hydrocarbon fires (crude oil, refined petroleum products, chemicals, etc.).

    Seawater Compatibility: The system can directly utilize seawater as the proportioning water source, ideally suited for marine/offshore environments.

    Methanol Compatibility: When configured with alcohol-resistant (AR) foam, the system effectively suppresses polar solvent fires, including methanol and ethanol.

    Multi-Zone Protection: The system provides simultaneous or zoned protection for multiple high-hazard areas, including liquid cargo deck areas, machinery spaces, and fuel preparation rooms.





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