The specific performance table parameters are subject to the test report!

Material: 1. It is normally open at ordinary times. When the temperature inside the valve reaches 70 ℃, the fusible link will fuse, the valve will be closed under the spring force, and the flue gas will be cut off along the pipeline.

The valve can be used as air volume regulating valve at ordinary times, with six levels of air volume regulation.

2. When fully open, the resistance coefficient f ≤ 0.5.

3. The thickness of rectangular valve is L = 250mm, and that of circular valve is L = 320.

4. If feedback signal is needed, please explain it when ordering.

5. Wiring diagram: AB is on when opening and BC is on when closing.

6. When the size of rectangular valve is greater than 1250 * 800, the valve is processed by a combination of several valves smaller than the limit size.

7. When the size of circular valve is greater than 800mm in diameter, the valve shall be processed into a rectangular combination, and both ends of the valve shall be subject to the treatment of square connection and round diameter change.

Note: sfd-t-1 is a manual fire damper - normally open 70 ℃; sfd2-t-1 is a circular manual fire damper - normally open 70 ℃;

Sfd-t-2 is electric fire damper - normally open 70 ℃; sfd2-t-2 is circular electric fire damper - normally open 70 ℃;

Sfd-t-3 is remote control fire damper - normally open 70 ℃; sfd2-t-3 is round remote control fire damper - normally open 70 ℃;

Sfd-t-4 is full-automatic fire damper - normally open 70 ℃; sfd2-t-4 is round full-automatic fire damper - normally open 70 ℃;