Separate exhaust system: (1) smoke room, the set when the flue gas temperature exceeds 280oC can automatically turn off the smoke damper. Smoke machines should ensure 280oC when continuous work 30min; (2) in the exhaust manifold is set when the flue gas temperature exceeds 280C smoke damper closed on their own. Damper, smoke damper as a building fire, an important part of the exhaust system, fire dampers, its quality is directly related to the success or failure of the above-mentioned system settings related to the building fire safety and evacuation safety. Both for suppliers, customers, or the fire inspection department, wholesale Wuhan dampers are extremely concerned about the quality of their quality. Vent pipe is not in use when the fire damper to close 70 degrees role play to prevent the spread of fire. Exhaust damper system is smoke in the fire, the higher the flue gas temperature, Wuhan damper buy, to 280 degrees, the fire has reached not by mechanical ventilation effect, the exhaust valve is closed to prevent the fans, etc. equipment damage. 70 normally open normally open fire. A fire close. 280 NC fire smoke, a fire fight began to open when the exhaust air stream 280 is closed. Wuhan Wuhan Han Wei Li Yuen damper prices _ (certified) _ damper provided by Wuhan Han Wei Liyuan heating Equipment Co. 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 better future.