Damper points and 70 degrees 70 degrees 280 degrees is automatically turned off when the temperature reaches 70 degrees, then the input module when the temperature reaches 280 degrees is 280 degrees automatically shut down, then the input and output modules, to be coordinated shutdown. Damper reasonable use of the building in the design engineering event of fire, often resulting in serious injury or death and economic losses, especially in air-conditioned buildings and high-rise building fire damper valve, to prevent fire and smoke control is especially important. Design, should be familiar with the relevant regulatory requirements, set on fire dampers in ventilation and air conditioning systems, fans smoke damper fire damper located in the exhaust pipe to prevent the transfer of toxic fumes hot fire, fire spread and loss and toxicity increase. Dampers used in the ventilation, air conditioning system, the return air duct on the road, usually was turned on manually damper, when the fire damper occurs once, the gas pipeline temperature reached 70 ℃ turn itself off, and within a certain period of time to meet fire-resistant stability and fire integrity requirements, from smoke fire retardant. Exhaust valve in the exhaust system pipe or inlet of the exhaust fan, and usually was closed when the fire broke out, automatically open the valve manually or by a fire alarm signal, according to the system function with the smoke, when the pipe tobacco When the temperature reaches 280 ℃ automatically shut down, and to meet the fire resistance stability and fire integrity requirements within a certain time, from the distribution of smoke fire retardant fire dampers |. Wuhan Han Wei Li Yuen (certified) | caidian damper made Wuhan Han Wei Li Yuen heating Equipment Limited. Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. (www.whhwly.com) is a leader in Wuhan, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. In Wuhan Han Wei Li Yuen leadership with the staff warmly welcome all inquiries negotiations to create Wuhan Han Wei Li Yuen better future.