Fire damper is installed in the exhaust fan at the entrance and ventilation and air conditioning systems use either system, usually in a "normally open" state Wuhan smoke damper wholesale, ventilated, when the pipeline flow when the temperature reaches 280 ℃ Wuhan smoke dampers, valves by fusible metal temperature fuse action and automatically shut down, cutting off airflow 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. Smoke damper settings normally open or normally closed, depending on the form of exhaust port may be. (1) When the exhaust port located normally closed damper, smoke damper set normally open on the exhaust manifolds; (2) when the set of ordinary normally open outlet when set on a normally closed smoke exhaust manifolds dampers (3) When setting special fire smoke normally closed mouth, then the exhaust manifolds on no smoke damper. Fire control valve _ Wuhan Wuhan Han Wei Li Yuen (certified) _ damper provided by Wuhan Han Wei Liyuan heating equipment Limited. Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. (www.whhwly.com) is a leader in Wuhan, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. In Wuhan Han Wei Li Yuen leadership with the staff warmly welcome all inquiries negotiations to create Wuhan Han Wei Li Yuen a better future.