Hao Yang, 70 degrees to 70 degrees damper damper installed in the central air-conditioning duct system works membership fusible alloy temperature control damper, 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 damper actuators, close to 70 degrees, usually installed in the duct through the firewall, fires off the role, you can set the output electrical signal, smoke more than 70 degree valve closed chain to send (s) off the fans; 70 degrees damper prices 70 degrees damper manufacturers, Texas 70 degrees damper manufacturers, wucheng cheapest 70 degrees damper manufacturers. Fan coil units, air, glass blower, air flow control valve, liquid temperature control, Air Conditioning Equipment Co., Texas Hao Yang smoke damper 280 degrees 280 degrees smoke damper: 280 degrees fuse closed, normally open, output electrical signal, This and 70 degrees dampers similar to, but different from the Texas fusing temperature air flow control valve, commonly used to fire the exhaust pipe through the firewall, the flue gas temperature exceeds 280 degrees automatically blown off, you can turn off the exhaust fan chain. Where smoke damper damper low price price, 280 degrees damper manufacturers, Texas 280 degrees damper manufacturers, wucheng cheapest smoke damper manufacturers. Fan coil units, air, glass blower, air flow control valve, LCD thermostat, Texas Hao Yang Air Conditioning Equipment Co., Texas air-flow valve, Binzhou fire dampers, air-conditioning equipment provided by Hao Yang Hao Yang Air Conditioning Equipment Co., Texas. 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!