Fire damper supply

The fire damper is installed at the inlet of the fan used in both the smoke exhaust system and the ventilation and air conditioning system. It is usually in a "normally open" state and can ventilate. When the temperature of the airflow in the pipeline reaches 280 ℃, the valve automatically closes by the temperature fuse of the fusible metal, cutting off the airflow and preventing the spread of fire.

Fire dampers are installed on the supply and return air pipelines of ventilation and air conditioning systems. They are usually in an open state. In the event of a fire, when the gas temperature in the pipeline reaches 70 ℃, the fusible link will melt and the valve will automatically close under the force of the torsion spring. The valve can meet the requirements of fire resistance stability and integrity within a certain period of time, and plays a role in smoke and fire prevention. When the valve is closed, output a closing signal.