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 ℃, 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 in Table 1. 4. The selection of valve should pay attention to the function of the damper valve manufacturers, 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 dampers offer, thickness 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. 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 fire dampers, fire dampers this design principle the presence of functional waste, but also a waste of modules, valves, construction costs. PY-SFD smoke damper PY-BSFD remote control smoke damper features: input DC24V power control center, quickly open the valve. Manually open. Output Enable signal, and fire row machine interlock. Manual reset closed. 280 ℃ temperature sensor movement, re-close the valve. PY-BSFD remote control can be far away from electric smoke damper open, manually open, manually shut down. Damper Quote | Daqing City damper | Rui Xincheng air conditioning provided by the Texas Air Conditioning Equipment Co. Rui Xincheng. Texas Rui Xincheng Air Conditioning Equipment Co., Ltd. (www.dzrxckt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Rui Xincheng air conditioning and you hand into the brilliant, for a better future!