SigmaVent Normal Closed Fire Dampers 120-NZ-AhV-SV for Emergency Ventilation Systems

Valves Sigmavent- ...NZ.... are designed to open openings in enclosing structures of supply and exhaust ducts of emergency smoke ventilation systems. The valves should not be installed in premises of categories A and B of explosion and fire hazard.

The environment must not contain aggressive vapours and gases in concentrations destroying metals, paint coatings and electrical insulation. The temperature at the place of installation of the valve actuator is limited by the operating temperature of the air during operation of the actuator. Valves can be installed in vertical and horizontal openings of supply and exhaust ducts of smoke ventilation, in ceilings, suspended ceilings, on branch ducts and in ducts.