来证明火减震器

Fuctions and features: >The valve will be shutdow automatically when the fuse block move at temperature of 70°c >The damper will be automatically shutdown when DC240V electric signal sent to the valve. Shutdown manually >Output shutdown signal, the related ventilation equipment stop working. >Start-up manually. >Adjust air flow volume manually. Main technical parameters >Operation power/electric current: DC24V/0.5A >Acting temperature of the thermal detector: 70°c >Fire endurance: 1.5h >Air leakage volume: 290m3/h·m2 >Resistance coefficient at full opening: <0.4 Construction: >Main parts: damper body, damper plate, shaft sleeve, self-locking actuator. Size(A*B*L) Rectangular: 400*400*320 2000*1250*320 Round: Ø320 Ø1600 thickness: L=320 Special size can be customized.