What material useful wind damper? Connecting duct damper material? FRP how to connect ventilation dampers, air duct air conditioning system should be non-combustible material, except in the following circumstances: a contact with corrosive media duct and flexible joints can be flame retardant materials; two stadiums, exhibition halls, waiting (car ship) Building (Hall) and other large space buildings, office buildings, and C, D, E inside the plant ventilation, air conditioning system valve, when the duct is set according to the fire district and set up a smoke dampers, can be less toxic products of combustion and smoke density rating of 25 or less flame retardant materials. Fire dampers, spiral duct, electric air valve, valve actuators, valve actuators price, selection and installation of valve, valve manufacturers, valve legends, outlet valve, manual valve, pressure delivery valve row smoke 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, are pressure blower, air flow control valve, damper prices, flue damper, Texas Hao Yang Air Conditioning Equipment Co. factory direct circular air flow duct butterfly valve, check valve Ohm wind duct is positive, the fire will not spread through the air duct to the air conditioner at, but not control spread to other fire district by the wind, in this case, the new air damper system alarm function much effect? c) If a fire occurs in the vicinity of the air-conditioned room, or that took place in the air-conditioned room delivery valve, fire smoke directly inhaled air return duct exhaust valve, causing the fuse damper ventilation valve, then alarm fire dampers will play a role. But this is only for the winter, the summer air-conditioning cooling operation will cool smoke alarm time delay, weaken this way. Smoke damper, 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, damper prices, flue damper, Texas Hao Yang Air Conditioning Equipment Co. Wudi sent damper valve _ _ 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.