Purpose: Used in the ducts of ventilation and air-conditioning systems that require smoke and fire prevention. When a fire occurs, the smoke detector outputs a DC24V electrical signal or 70°C,

The temperature sensor acts to close the valve tightly, effectively sealing the smoke leakage and preventing the fire from spreading.

Material: galvanized steel sheet/ordinary steel sheet

Function: 1. Normally open, the airflow temperature reaches 70℃, the fuse will act, and the valve will be closed automatically.

           2. The valve can be closed by DC24V power supply

           3. Manually open or reset

           4. Manually adjust the blade opening angle within the range of 0-90°

           5. Output valve closing signal, which can be interlocked with other equipment.