Smoke exhaust electric fire damper

Electric fire dampers are installed on the supply and return air ducts of ventilation and air conditioning systems. They are usually in an open state and close when the temperature of the smoke in the ducts reaches 70 degrees Celsius during a fire. They can meet the requirements of smoke leakage and fire resistance integrity within a certain period of time, playing a role in smoke isolation and fire prevention.

(1) The valve is usually in a normally open state. When the airflow temperature reaches 70 ℃, the temperature sensor will activate and the valve will close;

(2) The valve can be closed through a DC24V power supply;

(3) Manually close or reset;

(4) Manually adjust the blade opening within the range of 0 ° to 90 ° (adjustable type);

(5) Output valve closing signal, which can be interlocked with other fire prevention equipment.