1, was usually normally closed when the fire broke out, by the control center DC24V power input, the valve automatically opens. 2, when the pipe temperature reaches 280 ℃, the fuse action, the valve automatically closes. 3, can be opened manually. 4, after the valve is opened, without manual reset, simply enter DC24V power, the valve can be automatically reset to its original closed position (this feature is not limited to action before the temperature sensor, temperature sensor such as temperature sensors need to be replaced after the action can still use this function). 5, the output signal of the valve is opened, the interlock control exhaust fan start and stop. 6, if memory alloy temperature sensors, can be used repeatedly without replacement. 

keywords: Automatic reset type smoke dampers, fire smoke damper manufacturers, automatic plate discharges, ,