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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 electromagnet in the actuator is energized to automatically close the valve and output an electrical signal for closing.
2. The valve can be closed manually or the 70℃ temperature sensor can be closed.
3. The valve has six gears to manually adjust the air volume opening.
4. Manual reset after valve action.
Structure:
Main components: valve body, blade, shaft, bushing, temperature sensor, actuator, stainless steel spring plate, torsion spring, etc.
Maximum manufacturing size of valve: 1250×800. Torsion force of torsion spring of actuator can be adjusted in three gears.
Model of supporting actuator: JFHF WSDc-FK
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.