Main Technical Parameters
Air leakage rate (at differential pressure 30 Pa): ≤700 m³/m²·h
Microswitch contact capacity: AC 380V ＜ 0.5A
Control voltage: DC 24V
Resistance coefficient at fully open position: ＜ 0.5

Structure
Main components: valve body, decorative air outlet, valve blade, shaft, shaft bush, actuator.
Thickness of multi-blade smoke exhaust outlet: L=250 mm (including air outlet panel).

Performance
It is installed in the smoke exhaust system and keeps normally closed under normal conditions.
In case of fire, the smoke detector sends an electrical signal (DC24V) through the control center. The electromagnet inside the actuator is energized to operate, and the valve opens automatically and outputs an opening electrical signal.
The valve can be manually opened and manually reset.