SIEX’s innovative equipment, with valves to regulate the outlet pressure, improves protection by regulating the discharge. The Constant Flow Technology System represents an evolution in inert gas systems.


The clean agent discharge is produced in a controlled manner according to the cylinder pressure in order to achieve better protection with a constant pressure during the entire discharge. The discharge pressure can be adapted to the pressure required for protection. Although the most common pressure is 60 bar (870psi), it is possible to adjust it as required for installation.


SIEX adapts all of its components to this new technology, unifying the system using exclusive design software and optimizing the design in each individual case. With this new technology the over-pressurization of the enclosure decreases and the pipe diameters are considerably reduced, which saves money throughout the entire installation. Its pneumatic activation mechanism offers greater safety compared with the existing competition on the market, making it stand out.


INERT-SIEX™ CFT (Constant Flow Technology) can be installed with all our inert agent systems:

  • INERT-SIEX™ CFT-01 (Constant Flow Technology): Argon
  • INERT-SIEX™ CFT-55 (Constant Flow Technology): Nitrogen + Argon
  • INERT-SIEX™ CFT-100 (Constant Flow Technology): Nitrogen
  • INERT-SIEX™ CFT-541 (Constant Flow Technology): Nitrogen + Argon + CO₂
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™ CFT-541 regulates the outflow of gas, providing a constant flow during discharge.