The fire damper with air volume regulation is installed on the supply and return air ducts of ventilation and air conditioning systems. It remains open under normal conditions. In case of fire, it will close when the flue gas temperature in the duct reaches 70℃. It can meet the requirements of air leakage and fire resistance integrity for a certain period of time, serving as a valve for smoke isolation and fire resistance. A fire damper generally consists of a valve body, blades, actuator and thermal sensor and other components.
Valve body: galvanized steel plate; Bushing: copper
