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Functional principle - FirExting® gas extinguishing system

FirExting® gas extinguishing systems fight fires effectively while also providing optimum protection for property and inventory. They eliminate extinguishing-related damage, such as is often caused by water, water fog or foam. This is because gas extinguishing works by taking away the fire’s basic needs: The extinguishing gases either stifle the source of the fire by displacing oxygen from the air around it (as is the case with liquefied and non-liquefied inert gases or carbon dioxide), or they deprive the fire of the heat energy it needs (as with the chemical extinguishing agent FK-5-1-12).

Principle behind inert gases (e.g., nitrogen)

Gas extinguishing technology using inert gas primarily works based on the principle of oxygen displacement. The gaseous extinguishing agent is fed into the room air, reducing the oxygen levels to the point that the combustion process is stopped. Inert gases do not form chemical compounds, so they extinguish without leaving residues.

The principle behind chemical extinguishing gases

Chemical extinguishing gases primarily extinguish fires by taking away their heat energy. As they are released, extinguishing gases mix with the air. This extinguishing agent/air compound has a significantly higher heat absorption capacity than pure air. The presence of the extinguishing agent causes the fire to dissipate more heat into the environment. As a result, the combustion zone cools down more and more, until at last the fire is extinguished.

Innovative, natural fire suppression

When gas extinguishing is triggered, the atmospheric pressure within the protected area rises briefly. Pressure relief equipment is necessary to balance out this effect. WAGNER’s soft flooding system provides an effective solution in this regard. Because it reduces pressure peaks, pressure relief surfaces can be reduced by more than 50%, and pipe networks can be dimensioned smaller.

Specially designed sound suppressors are used in IT areas to protect sensitive electronics.

When a gas extinguishing system is triggered, the rushing noise from the nozzles can reach sound pressure levels of over 130 dB (A). This can cause hard disks and other sensitive parts to vibrate, which can damage them. WAGNER’s specially designed SILENT nozzle noise suppressors reduce sound pressure levels by 20 to 38 dB(A). This makes WAGNER the first manufacturer to develop a VdS-approved solution for preventing data loss and hard disk failure.