Fire Eater Technology | Our Inert Gas Suppression Supplier

Our supplier relationship

For inert gas (Inergen/IG-541, and Argonite/IG-55 for comparison) fire suppression systems, GYS sources products and systems from Fire Eater A/S. This is not a claim of authorized dealership or certified partnership — on our projects we use hardware Fire Eater designs, manufactures and tests (cylinders, manifolds, selector valves, nozzles, control panels), while our own team handles engineering calculation, field installation, and commissioning.

How Inergen (IG-541) works

Inergen is a natural, inert gas blend of 52% nitrogen, 40% argon and 8% carbon dioxide (standardized as IG-541). Discharged into an enclosed room, it mixes with the ambient air and lowers the oxygen level from roughly 20.9% to around 12-15% — low enough that combustion can't sustain itself, yet still safe for people to be present for a limited time. The 8% CO2 fraction is a deliberate design choice: it stimulates the respiratory center, deepening breathing so the body's oxygen uptake is supported even in a reduced-oxygen atmosphere. This makes Inergen a preferred inert gas specifically for occupied spaces — data centers, control rooms, museums.

Stand Alone and Multi-Zone architectures

Fire Eater's system approach offers two core architectures: Stand Alone, an independent system serving one protected zone with its own cylinder bank, valve, and piping. Multi-Zone serves several fire-separated zones from one shared cylinder bank, each zone gated by its own selector valve — the bank is sized to the single largest zone's requirement, not the sum of all zones. See our comparison guide for which architecture fits which project.

System components

Fire Eater hardware includes cylinders/cylinder banks, manifolds, discharge valves, selector valves (multi-zone), solenoid/pilot actuators, pressure switches, check valves, burst discs and calibrated nozzles. We break down how each component works in our System Components article.

Inergen technology on video

The videos below are embedded from Fire Eater A/S's official channel as a technology reference.

Fire Eater Brochure

Download Fire Eater A/S's technical brochure on Inergen (IG-541) systems as a PDF.