Smoke damper uses (1) usually in a normally closed valve, either manually or automatically open fire, when the airflow temperature reaches 280 ℃, the temperature sensor motion damper types, the valve is closed; (2) the power to make by DC24V the valve is closed; (electric type smoke damper) (3) or manual reset manually shut down; (4) closed DC24V electric reset; (automatic type smoke damper for local inconvenient manually operated) (5) Output Swiss liter damper valve closing signal can be interlocked with other fire-fighting equipment. Smoke damper 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 accurately even driven valve actuator movement damper installed in the valve body temperature fuse. The temperature fuse fusible or fusible ring fusing temperature is 70 ℃ damper principle, these dampers up with. When installing pay special attention to the temperature fuse must be installed with the air flow direction. When the fire damper with a regulatory function, also known as fire control valve. Damper applications, the Swiss mechanical and electrical liter (certified), the damper is provided by the Swiss liter HVAC Electrical Equipment Factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In liters Swiss electromechanical leadership with the staff warmly welcome all inquiries negotiations to create liter Swiss electromechanical better future.