Fire dampers, duct damper suppliers fdsh, the company welded duct dampers and product specifications from Φ100 ~ Φ2000 ~ Φ3000 flue damper, oval duct product specifications from H200 ~ H1000. Material can be cold plate, galvanized sheet, stainless steel plate. Divided single exhaust, smoke, dust, exhaust air duct and double insulation. Widely used in electronics, food, medicine, biology, chemistry, precision machining, venues, exhibition halls and other engineering systems. The company's products are straight, 45 ° elbow, 90 ° elbow, T tee, pants tee, cross, head size, valve, hemispherical dome, saddle interface, flange, blind, middle connector and so on. Fan coil units, air, LCD thermostat, glass blower, air flow control valve, Air Conditioning Equipment Co., Texas Hao Yang 70 degrees damper Features: 1. usually was turned damper valve automatically closes 2.70 ℃ 70 ℃, manually shut down manual reset DC24V power valve closes 3. vanes 0-90. 4. stepless valve is closed, the output of the closing operation of telecommunications and other equipment interlock 5. Control Power Supply: Voltage DC24V ± 10%, the current electrical schematics ≤0.5A 6. Annex after double micro switch schematics smoke fire dampers, fire control valve, 70-degree fire dampers, exhaust valves, dampers works, fire dampers pictures, damper installation location, wiring diagram 280 degrees dampers, exhaust fans, diffusers, dampers, positive blower, air flow control valve, fire dampers price, flue damper Weifang fire dampers, fire dampers 70 ℃, Hao Yang air conditioning equipment (certified merchants) are provided by the Texas Air Conditioning Equipment Co., Ltd. Hao Yang. Air Conditioning Equipment Co., Texas Hao Yang (www.dzapjt.com) is specialized in the "fan coil units, air, mixed flow fan, FRP fans, dampers, air flow control valve" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr Zhu.