Inert fire-extinguishing gases are mixtures of naturally occurring gases (nitrogen, argon, CO₂) used to extinguish fires by depriving them of oxygen — they are particularly suitable for protecting sensitive equipment (server rooms, museums, archives). PWENT’s range of inert fire-suppression gas filling and transfer machines provides fire protection maintenance workshops with the equipment required for a full service. Note: this category (DUPLA) shares a common URL with categories 400-030 (FM200/NOVEC) and 500-020 (industrial inert).

Types of inert shielding gases
IG-541 (Inergen): a mixture of nitrogen (52%) + argon (40%) + CO₂ (8%). The most commonly used inert extinguishing agent. IG-100 (Nitrogen): a pure nitrogen extinguishing system — simpler logistics. IG-55 (Argonite): a mixture of nitrogen (50%) and argon (50%). All have zero ODP (ozone depletion potential) and GWP (global warming potential) values — completely environmentally friendly.

Maintenance and charging
The maintenance of inert fire-suppression gas systems requires specialised equipment: high-pressure cylinders (200–300 bar) are filled with the appropriate gas mixture and brought up to the specified pressure. PWENT’s transfer machines are suitable for recovering, filtering and refilling the old gas mixture. Ensuring the exact proportions of the mixtures is critical — specialised measuring instruments are required.

Areas of application
Server farms and data centres: protection of sensitive electronic equipment without the use of water or foam. Museums, archives and libraries: protection of valuable historical materials. Chemical and pharmaceutical industries: areas where water or foam would cause damage. Submarines, ships: oxygen deprivation can be controlled in enclosed spaces.

Our staff will help you choose the right inert gas mixture and filling system. Please ask for a quote.