Products using duplicate use of these devices in some cases fire engineering construction projects. Such as Chongqing Tobacco Building is an example. Automatic tobacco smoke damper Chongqing mainly office and commercial buildings, walkways long smoke damper, set damper mechanical exhaust system, each floor is only a smoke partition. Smoke on each floor electric charge of the design of a normally closed damper, each of each exhaust port has designed an electric normally closed exhaust valves, exhaust fan inlet of the fire has designed a normally closed electric smoke damper. Obviously, this design features a waste of existence, but also modules, valves, construction costs of waste. Damper (70 ℃, 280 ℃) otherwise: Fire and smoke damper valve plate discharges leafy exhaust port outlet pressure delivery outlet fire leafy outlet pressure delivery outlet pressure outlet a principle, Uses damper is adjustable on the basis of the valve to increase the temperature control device. Usually was turned damper principle, when the fire broke out, manual, automatic temperature fuse quickly close the valve, pull open the valve manually reset. Mounted on the fire safety requirements have ventilation, air-conditioning system piping. 2, the operating principle of the usual devices, fuses stuck valve stem tip axis (blade shaft) fork on the plate, so that the valve is normally open state. After the fire, the temperature rose to the pipeline flow easily blown fuse, when the temperature fuse fusible sheet, stem Jibei spring driven off the split plate, valve shaft is rotated by the torsion spring acts to close the valve. Normally, To adjust the air volume can be adjusted through the valve opening and valve shaft (blade shaft) linkage handle, fix its position by the time the mother butterfly meet the requirements. Contact with the handle of the fork system have rings of teeth to prevent slippage after engaged to keep the valve opening rate setting unchanged. According to user requests for additional electrical output device closure (cam, micro-switches, terminals, etc.) become fire control valve. 3. Installation Notes: Installation should note the direction of flow, so that the hot air in contact with the fuse first blade shaft. Reset, the first Royal damper top cap price, out of the fuse. Dress fusible sheet, installed fuses. So that the stem tip insert fork, then it is set valve opening. Damper module _ Rui Xincheng air conditioning (certified) _ damper provided by Rui Xincheng Air Conditioning Equipment Co., Texas. Texas Rui Xincheng Air Conditioning Equipment Co., Ltd. (www.dzrxckt.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Rui Xincheng conditioning in leadership with the staff warmly welcome all inquiries negotiations to create a better future Rui Xincheng air conditioning.