Damper excellent quality, standardization, interchangeability. Board quality thick. Fusing timely. Fire dampers, normally open, 70 degrees or 280 degrees closed, generally installed in the duct through the firewall, fires off effect, you can set the output electrical signal, the temperature exceeds 70 degrees or 280 degrees the valve is closed, the linkage to send (s) the fan is turned off. Damper installed in the ventilation, air conditioning system, the return air duct on the road, usually was turned on, when a fire in the pipeline when the gas temperature reaches 70 ℃, fusible film fuse, the valve in the torsion spring force closed automatically install product principle central air-conditioning duct system works easily fluxing temperature control, by the action of gravity and spring mechanism closes the valve. When a fire occurs damper module, flame invasion duct, high temperature causes the fusible alloy melting on the valve, or to memory alloy deforms the valve automatically closes, for air duct and the fire district occasions throughout Texas Rui Xincheng air conditioning equipment Limited smoke damper type: normally closed smoke dampers, remote control-type smoke damper (rope-controlled) fire dampers, normally open type smoke damper fire damper wholesale, automatic reset type smoke damper . Shandong smoke damper 280 degrees Uses: (1) allows the valve is closed by DC24V power; (electric type smoke damper) (2) Texas Echo smoke damper closed DC24V electric reset; (automatic type smoke damper for local inconvenient manually operated) (3) or manual reset manually shut down; (4) Shandong usually smoke damper 280 degrees in normally closed when the fire manually or automatically open, when the air flow temperature reaches 280 When ℃, temperature sensor operation, the valve is closed; (4) Texas Echo smoke damper closed output signal can be interlocked with other fire-fighting equipment. . Remote control damper, Yili damper, Rui Xincheng air conditioning (view) provided by the Texas Air Conditioning Equipment Co., Ltd. Rui Xincheng. Rui Xincheng Texas Air Conditioning Equipment Co. (www.dzrxckt.com) is a professional "axial fans, mixed flow fans, roof fan, Francis fan, fire temperature exhaust fan, the wind," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so that the "Rui Xincheng" brand has a good reputation. We adhere to the "service first, customer first" principle, so 瑞鑫诚 air conditioning won the trust of customers all of the fan, ventilation equipment, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!