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 damper on the valve, or to 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 damper actuators wiring diagram, send chain (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 dampers: The main function is to smoke. Applied to the ventilation and air conditioning systems, smoke damper is usually installed in the engine room ventilation systems and air conditioning systems at 70 degrees separate fire damper wiring diagram, is 70 ℃ dampers. Usually always open, when the wind pipe flue gas temperature reaches 70 ℃ fusible film fuse, the valve is closed, as required electrical signals can be fed back to the control center reported the damper is closed. So do not need a remote control to open the fire control room. Smoke damper: The main function is to smoke. Applied to the mechanical exhaust system is 280 ℃ damper fire control damper, usually is normally closed when the fire broke linked by automatic fire alarm signal is automatically turned on, along with a manual actuator may be opened manually, but also in fire control center remote open (ie linkage control, manual control, automatic control in three ways). To prevent false alarms general practice for manual fire fighting system state, when confirmed by the occurrence of a fire control room or field manually turned on, and the linkage exhaust fan is turned on. Usually installed in the exhaust port, the duct through the fire, smoke and smoke partitions separate room at the duct wall at the flue gas duct when the temperature reaches 280 ℃ closed. Smoke damper in the open, generally based on the division of smoke partitions, open exhaust vent / valve fire alarm zone and the adjacent district of exhaust port / valve, when an area of ??the flue gas temperature reaches 280 ℃ region row smoke vent / valve is closed. When the main channel flue gas temperature reaches 280 ℃, the main pipe and smoke damper linkage exhaust fan shut off, and the feedback signals to the fire control room. In addition to ventilation and exhaust systems, the main channel smoke damper 280 ℃ normally open, no remote control is turned on when the flue gas temperature reaches 280 ℃, fusible film fuse, the valve closes, the feedback signals to the fire control room and chain exhaust fan is turned off. Customized damper manufacturers, Handan 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!