70℃ Fire Damper

φ100
Installed on the supply and return air ducts of ventilation and air conditioning systems, it is usually open. When the gas temperature in the pipeline reaches 70°C during a fire, the fusible piece melts and the valve automatically closes under the action of the torsion spring force. It can meet the requirements of fire resistance stability and fire resistance integrity within a certain period of time and play the role of smoke and fire barrier. When the valve is closed, it outputs a closing signal. The size of the fire damper can be customized. The shape can be customized to be rectangular, round, or elliptical.