Fire damper is installed in the exhaust system and the ventilation and air conditioning systems use either entrance fan damper, usually in a "normally open" state, ventilation, air flow when the pipe when the temperature reaches 280 ℃ Wuhan smoke damper valve by fusible metal The temperature fuse action and automatically shut down, cutting off airflow price Wuhan smoke damper to prevent the spread of fire. Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. is a professional constant pressure water equipment, air valve, fans, diffusers, air, plenum chamber muffler production and marketing in one of the science and technology enterprises. Recommendation: One way is to exhaust port of the exhaust valve and damper module cancel Wuhan quality wholesale outlet into a single louvers; second method is normally closed to the smoke dampers on each electric charge of changed normally open 280 degrees off damper control module to the general monitoring module. Both methods achieve the same fire code requirements, and the actual control is also very reliable. Smoke damper damper _ _ Wuhan Wuhan Han Wei Wei Li Yuen provided by Wuhan Han Liyuan heating equipment Limited. Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. (www.whhwly.com) strong, credible, in Wuhan, Hubei fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Wuhan Han Wei Li Yuen and you hand into the brilliant, for a better future!