Purpose: Used in the pipes of ventilation and air-conditioning systems that have requirements for smoke and fire prevention, especially for important buildings with automatic gas fire extinguishing devices.

It is suitable for places where the ventilation and air-conditioning ducts cannot be reset manually.

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. After the valve is closed, the valve can be reset to the open state through the DC24V power supply.

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

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