Performance:

1. It is normally open at ordinary times. In case of fire, the smoke (temperature) sensor sends an electrical signal (DC24V) through the control center, and the motor in the mechanism is energized to automatically close the valve and output a closing electrical signal.

2. After the valve action, the DC motor is driven to reset.

3. The valve can be closed manually and reset manually.

4. When the temperature rises to 70℃, the temperature sensor acts and the valve closes automatically.

5, action signal or reset signal feedback to the control center and start the interlocking equipment.

6. The valve has six gears to manually adjust the air volume opening.

Structure:

Main components: valve body, blade, shaft, bushing, temperature sensor, actuator, stainless steel spring plate, torsion spring, etc.

The valve body is made of stainless steel, and the actuator is galvanized. Maximum manufacturing size of valve: 1250× 800.

Model of supporting actuator: JFHF WSDj-FYK

W × H matches the size of air duct, and the flange size is the same as the flange of metal rectangular air duct in GB50234-2002.