Fire and smoke control valve function · 70 ℃ temperature sensor 280 degree smoke damper operation, the valve automatically closes. · 280 ℃ temperature sensor motion damper, the valve automatically closes. · Manually shut down; manual reset open. · Manually adjusting the blade angle. (Five-speed adjustment). · Output signal or interlock control valve closed signal. · Amount of air leakage: the national standard (see test report). · Refractory time: ≥90min. · Corrosion resistance and reliability are in line with the national movement. Fire and smoke control valve · DC24V input signals, automatic damper action solenoid valve automatically closes. · 70 ℃ temperature sensor operation, the valve automatically closes. · Manually shut down. · Output off signal or interlock control signal. · Manually adjust the blade angle 280 degrees dampers price, five-speed adjustment amount of wind. · Operating voltage: DC24V + 10%, - 15%. · Working current: ≤0.3A. · Temperature sensor is 70 ℃ fusible sheet. Such as the use of shape memory alloy 70 ℃ temperature sensors, please indicate in the design and ordering. · Amount of air leakage: the national standard (see test report). Insulation resistance:> 20M refractory time> 90min · corrosion resistance and reliability in line with the national movement. Automatic damper | Xinxiang damper | Chenyu air conditioning services provided by Wu Cheng Chen Yu Air Conditioning Equipment Co.. Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chenyu air conditioning and you hand into the brilliant, for a better future!