1. The main control parameters for the selection damper specifications. 2. damper suitable for ventilation and air conditioning systems, in addition to public buildings, kitchen hood system with damper damper Wuhan high temperature, operating temperature of 150 ℃, the general ventilation and air conditioning systems with fire dampers operating temperature of 70 ℃. 3. The damper is suitable for pipe ventilation, air conditioning or exhaust system, the scope and application of the basic functions are shown in Table 1.4. Selection valve should pay attention to the function of the valve dampers wholesale Wuhan, normally open or normally closed, shut down automatically open manually shut down open, manual reset, signal output, remote control and other requirements. 5. If the valve and fan interaction should be used with double micro-switch device. 6. The valve should be steel blade thickness of 2 ~ 6mm, the body of non-combustible material, rotating parts should be corrosion-resistant metallic materials, and flexible rotation. Shall not be less than the thickness of the valve housing 2mm. Yi Rong parts shall comply with recognized standards of the fire department. Ventilation and air conditioning systems transverse damper should be set for each fire district, the vertical layout of not more than five layers; when the pipe has a damper to prevent backflow facilities or features Wuhan damper manufacturers, and each layer has a sprinkler system , its vertical connection layers without this limitation. Ventilation ducts should not pass through the firewall and floor and other non-burning fire compartmentation body, such as when you must pass through, should be set at 70 ℃ blows smoke dampers through the place. When the fire smoke by fire compartmentation at the damper can be closed immediately. The general use of smoke damper control, instead of using fusible metal or fusible element control, which can effectively prevent the spread of fire in a timely manner and expand. Wuhan air volume control valve _ 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.