[Tianjin Jin Zhongji HVAC purification equipment to recommend the star product - check] duct valve structure design, unique drive, flexible operation, small size and light weight. When Ventilation, 280 ° galvanized fire dampers, the air pressure and make it open, stop headwind, valves, due to the blades and the gravity hammer, the valve plate itself off, by adjusting the position of the hammer to adjust the air flow. [Tianjin Jin Zhongji HVAC purification equipment to recommend the star product --70 ° galvanized sheet damper] Material: galvanized sheet (another steel and stainless steel materials to choose from), flanges into 30mm and 35mm while both (1) The valve usually is always on when the airflow temperature reaches 70 ℃, galvanized valve much money one level, temperature sensor operation, the number of valve flanges are galvanized sheet, the valve is closed; (2) DC24V power by the valve closed; (electric type smoke damper) (3) or manual reset manually shut down; (4) closed DC24V electric reset; (automatic type smoke damper for local inconvenience hand operated) (4) Output valve closing signal interconnection with other fire-fighting equipment. Advantages: 1, low air leakage, airtight performance 2, the electric current consumption small open 3, strong corrosion resistance and long service life. (Made of stainless steel type) 4, Actuated flexible. Feedback, interlock signal accurate. The main functions and characteristics 1, DC24V input signals, current ≤0.5A, solenoid operation, the valve 70 ° galvanized sheet quickly close the damper, the base (certified), the valve provided by the Tianjin Jin Zhongji HVAC purification equipment Ltd. . Tianjin Jin Zhongji HVAC purification equipment Limited (www.Jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. In the group leadership with the staff warmly welcome all inquiries negotiations to create a better future for the group.