Tip: One method is to exhaust port of the exhaust valve and the module cancel, vent louvers into a single layer; second method is to put a normally closed damper on each electric charge of the smoke changed to normally open 280 degrees windproof hoods closed damper valve, the control module replaced general monitoring module. Both methods achieve the same wind valve Fire Code requirements, and the actual control is also very reliable. Electric damper advantages 1, the amount of low leakage dampers, airtight performance; 2, electric open current consumption is small; 3, corrosion resistance strong fire dampers installation, long life; 4, Actuated flexible, feedback, interlock Signal accurate. Electric damper characteristics 1, DC24V input signals, magnet operation, [3] quickly open the valve; 2, manually shut down, manual reset opening; 3, the output signal and closed interlock valve opening control signal. Fire damper Installation | Wuhan Han Wei Li Yuen (certified) | Henan wind valve provided by the Wuhan-being of Equipment Co., Ltd. Li Yuen Wai. 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.