[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - manual control valve] Material: Aluminum / steel / stainless steel / galvanized steel product features: aluminum electric closed valve / aluminum air flow control valve of this product mainly used to regulate air flow, reducing wind speed, air pressure, reduce noise, and closed quite effective. Mainly driven approach is driven by a gear lever, manual or electric adjustment. Aluminum electric air valve is mainly used in central air-conditioning system [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - fire exhaust valve installed in the exhaust system] pipeline, the general was usually closed, fire manual or electric is turned on, play the role of smoke. When the internal temperature of the flue gas exhaust pipe reaches 280 ℃ closed check valve, in 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 degree multi-leaf blown exhaust port valve closed, or manually shut down) are commonly used in valve exhaust system, you can install one in the inlet exhaust fan, fire When the control is turned on by consumer control room can also be turned off when the chain closes the exhaust fan. Exhaust valves, with the three, each unit different names, some based on its operating temperature is called the exhaust valve exhaust valve plate valve, some based on its use of nature called damper, but just an ordinary party equipment fusing metal damper 280 degrees replaced a fuse that .3 automatic smoke damper (Metro Engineering) fire subway ventilation and air conditioning systems, exhaust valves have automatic fire alarm equipment and gas fire extinguishing system linkage control functions. 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. Electric control valve valve, valve Hebei, Jinzhong Ji factory outlets provided by the Tianjin Jinzhong Ji HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) strong, credible, in Tianjin fans, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the group into the brilliant and you work for a better future!