Stainless steel 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. Within a certain period of time, they can meet the requirements of smoke leakage and fire resistance integrity, 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; (Electric type)

(3) Manually close or reset;

(4) After the valve is closed, it can be reset to the open state through a DC24V power supply; (Fully automatic type)

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

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