Hao Yang, 70 degrees to 70 degrees damper damper installed in the central air-conditioning duct system works membership fusible alloy temperature control, by the action of gravity and spring mechanism closes the valve. When a fire occurs, the flame duct invasion, high temperature melting fusible alloy valves, or to make memory alloy deformed the valve automatically closes for the duct and the fire district throughout the occasion. Greider fire dampers, fire control valve: Normally open, 70 degrees is closed, usually installed in the duct through the firewall, fires off the role, you can set the output electrical signal, smoke more than 70 degrees when the valve is closed, the chain of delivery ( supplement) fan shut; 70 degrees damper prices 70 degrees damper manufacturers, Texas 70 degrees damper manufacturers, wucheng cheapest 70 degrees damper manufacturers. Fan coil units, air damper installation location, glass blower, air flow control valve, liquid temperature control, Air Conditioning Equipment Co., Texas Hao Yang Hao Yang Air Conditioning Equipment Co., Ltd. is located in northwest Texas, is a professional steel composite finished wind pipe, spiral duct, a total of flange plate duct and other HVAC equipment research and development, production, sale, installation of high-tech integrated companies. The company has four air control spiral tube lines, one oval duct lines and a welding line duct damper pictures, annual output of the wind pipe. Our products for the three series of more than 1,000 varieties. The company's products have been used in thousands of projects in the damper principle, because of their advanced technology, excellent quality, standardization, interchangeability, easy to install, low price and so loved by the users. Fan coil dampers, air, LCD thermostat, glass blower, air flow control valve, Air Conditioning Equipment Co., Texas Hao Yang 70 degrees fire dampers, fire dampers, air-conditioning equipment by Hao Yang Hao Yang Texas Air Conditioning Equipment Limited. Air Conditioning Equipment Co., Texas Hao Yang (www.dzapjt.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 Hao Yang air conditioning and you hand into the brilliant, for a better future!