Choice points Editing 1. damper main control parameters for the selection and specification. 2. damper suitable for ventilation and air conditioning systems, in addition to public buildings, kitchen hood system with dampers, operating temperature of 150 ℃ outside dampers selling, general ventilation and air conditioning systems with fire dampers operating temperature of 70 ℃. 3. Principle damper damper for ventilation, air conditioning or exhaust system piping, basic functions and scope of Table 1. 4. The selection of valve should pay attention to the function of the damper valve, normally open or normally closed, shut down automatically open, close the open hand, 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. Air Conditioning Equipment Co., Texas Rui Xincheng smoke damper is usually installed in the pipe mechanical exhaust system, usually was turned on, when a fire in the exhaust pipe when the temperature reaches 280 degrees flue damper closed quote, and to some time to meet the leakage amount of smoke and fire integrity requirements, from smoke fire retardant effect. Smoke damper main material: carbon steel, galvanized steel, stainless steel. Shandong smoke damper 280 degrees Advantages: corrosion resistance, long life (made of stainless steel type); low air leakage, airtight performance; electric open small current consumption; Texas Pacific smoke damper actuators driven flexible feedback, interlock signal accurately. 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 mechanical exhaust system is set up, 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 principle _ Rui Xincheng conditioning (certified) _ Hulunbeir 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.