Fire damper: It is installed on the air supply and return ducts of ventilation and air conditioning systems, and it is usually open. When the temperature of gas in the duct reaches 70℃ in case of fire, the fusible piece will melt, and the valve will automatically close under the action of torsion spring force, which can meet the requirements of fire stability and fire integrity within a certain period of time and play the role of smoke isolation and fire prevention. When the valve is closed, the closing signal is output.

Smoke exhaust fire valve: it is installed in the pipeline of smoke exhaust system and is usually closed. It is opened manually or electrically in case of fire, which plays the role of smoke exhaust. When the temperature of smoke in the smoke exhaust pipeline reaches 280℃, it is closed, which can meet the requirements of fire stability and fire integrity in a certain period of time and play the role of smoke exhaust.

Fire damper: It is installed on the air supply and return ducts of ventilation and air conditioning systems, and it is usually open. When the temperature of gas in the duct reaches 70℃ in case of fire, the fusible piece will melt, and the valve will automatically close under the action of torsion spring force, which can meet the requirements of fire stability and fire integrity within a certain period of time and play the role of smoke isolation and fire prevention. When the valve is closed, the closing signal is output.

Smoke exhaust fire valve: it is installed in the pipeline of smoke exhaust system and is usually closed. It is opened manually or electrically in case of fire, which plays the role of smoke exhaust. When the temperature of smoke in the smoke exhaust pipeline reaches 280℃, it is closed, which can meet the requirements of fire stability and fire integrity in a certain period of time and play the role of smoke exhaust.