Description usually was normally closed, fire, signals sent by the control center, DC24V input, agency action air conditioning damper, exhaust valve opens, the valve can be manually opened and closed. Automatic smoke damper action after electrically reset. Control voltage is DC24V, micro switch contact capacity AC380V dampers offer, 3A solenoid operating current 0.3A. Interlock control and related equipment. Advantages a damper, low air leakage, airtight performance; 2, the electric current consumption is small open; 3, strong corrosion resistance and long service life; (made of stainless steel type) 4, the actuator drive flexible, feedback, interlock Signal accurate. 1. normally open damper type smoke damper 2. normally closed smoke damper 3. Remote control type smoke damper (rope-controlled) 4. Automatic reset type smoke damper mounted exhaust valve exhaust system piping, the general was usually closed, manual or electric opened fire, from the smoke effect. When the internal temperature of the flue gas exhaust pipe reaches 280 ℃ closed within a certain period of time to meet the fire resistance stability and fire integrity requirements, from the exhaust valve function. Smoke damper normally closed (NC, open telecommunications number, 280 degrees blown off, or manually turn off) generally used in exhaust systems, exhaust fan can be installed at the inlet of a control to open the control room when the fire extinction, When the chain can also be turned off to close the exhaust fan. Exhaust valves, with the three, each unit different names, some based on its operating temperature is called the exhaust valve dampers, some based on its use of nature called damper damper manufacturers, but for the device side just ordinary fire fusing metal valve replaced the one that fuse 280 degrees. 3. Automatic smoke damper (Metro Engineering) fire, smoke valve subway ventilation and air conditioning systems have automatic fire alarm equipment and gas extinguishing system linkage control function. Each automatic smoke dampers have two independent electric control signal, respectively, by EMCS, gas consumption system to monitor, control signals are DC24V ± 10% signal. Each automatic smoke dampers have six independent feedback signal (three open place, three off place) feedback signals are normally open dry contact signal. Damper Pictures | Langfang damper | Rui Xincheng Rui Xincheng air conditioning provided by the Texas Air Conditioning Equipment Co., Ltd .. 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!