Air leakage rate (at a differential pressure of 300 Pa): ≤ 700 m³/(m²·h)
Control voltage: DC 24 V
Resistance coefficient when the valve is fully open: ＜ 0.5
Fire resistance rating of the valve: 1.5 h
Action time: 20 seconds
Structure：
Main components: valve body, valve blade, shaft, shaft bushing, fusible link, actuator
All flanges adopt common plate flange design
Flange width: 30 mm; valve body plate thickness: 2.0 mm; blade plate thickness: 2.0 mm
Length of rectangular valve body: L = 250 mm
The valve remains normally closed under standby conditions. In case of a fire, the smoke detector transmits an electric signal (DC 24 V) via the control center. The electromagnet inside the actuator is energized to actuate, enabling automatic opening of the valve with an opening feedback signal output.
After operation, the valve is reset driven by a DC motor. It can also be manually opened and manually reset on site.