INERT-SIEX™ clean agent systems are made up of gases found in the atmosphere, and so are completely environmentally friendly. They work by totally flooding the room, reducing the oxygen necessary for combustion, but ensuring adequate oxygen concentrations for use in occupied areas.

They can work at pressures of up to 300 bar, with the associated savings in installation cost. We also have 200 bar systems, depending on the volume / concentration needs. Thanks to the use of calibrated restrictors which reduce the pressure, standard weight piping can be used. This equipment is specially designed for installations with long pipe runs.

 As is the case with our SIEX-HC™ systems, INERT-SIEX™ systems use the full range of extinguishing agents. This makes it easier to adjust the design fully to the needs of our customers. The cylinders may contain: Argon (IG-01), 50% argon and 50% nitrogen (IG-55), nitrogen (IG-100) and 52% Nitrogen + 40% Argon + 8% CO₂ (IG-541). The different characteristics of the spaces to be protected are analyzed in detail by our technicians to advise you on the most suitable type of extinguishing system and agent.





Product Data
  • Zero ozone depletion potential (ODP) and greenhouse effect.
  • Allows long pipe runs.
  • Suitable for occupied areas.
  • Excellent post-discharge visibility.
  • Very low cost refills.
  • Easy to obtain anywhere in the world.
  • Cost savings using selector valves.
  • Computer rooms, control rooms.
  • Electrical panels, telephone switchboard equipment.
  • Electric and electronic applications.
  • False floors and false ceilings.
  • Archives, museums and libraries.

ISO 14520

UNE -EN 15004

NFPA 2001


Certificación VdS / UL


Silencers for Data Centres

Data centres include increasingly sensitive devices, especially to noise. High frequencies combined with sound pressures of over 110dB may affect the operation of their hard drives and cause permanent damage. It is essential that the fire protection system avoids damage not caused by the fire, but generated collaterally by the noise of the discharge.

SIEX SALC silencers reduce noise to below 90 dB in the most adverse case, far below the 120 dB of a free discharge and the 100 dB available on the market. It also allows for installation both in new projects and existing. They offer maximum benefits in use with inert gases (60 second discharges) and are compatible both with falling pressure technology (with restrictor) and with the new Constant Flow Technology (flow rate control in the DR valve).


INERT-SIEX™ 55 - 50% mixture of ARGON and NITROGEN gases
INERT-SIEX™ 100 uses nitrogen for extinguishment.
INERT-SIEX™ 541 - It is made up of 40% argon, 52% nitrogen and 8% CO₂