Implementation arrangements damper is composed of shell, leaves scheduling, back wheel, fuses and other measuring configuration. Each arrangement is to grasp the purchase method of Tangshan damper blade manually scrolling through non-metallic fusible sheet and the back wheel arrangement, which uses the machine transmission principle Tangshan manual damper optional method, since it is without electricity, gas and other power, in other words the damper can be protected in any case can play a fire effect. Not to mention the waste of resources that do not constitute a condition of purifying 280 smoke damper fire damper and other nature is the same, only more sensitive to temperature. 280 damper usually was always open, smoke detector control center sent an electrical signal (DC24V) Tangshan manual fire damper purchase method, the motor-energizing actions performed within the organization Tangshan manual damper optional method, the valve automatically closes and output off signals. After the valve actuation DC motors driving the reset, the valve can be manually shut down or 70 ℃ melting following action closes the valve has a six-speed adjust the air flow opening. Long-term supply manual damper | Baoding manual damper | Rich ventilation equipment from Dezhou rich ventilation plant. Dezhou rich ventilation plant (www.frtfsb.com) (www.frtfsb.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead rich ventilation equipment into the brilliant and you work for a better future!