Damper 70 ℃, east fire dampers, fire dampers Jie Weinuo Industry Professional (View) provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) is specialized in the "total of flange plate duct dampers, fans, ventilation ducts, evaporative air conditioners, cable tray" of the enterprise, the company adhering to the "integrity management, service intentions, "the idea, to provide you with the highest quality products and services. Welcome to inquire! Contact: Su Wei. [Jie Weinuo Electric Industrial Co., Ltd. Star recommendation] damper damper types: 1. Fire and smoke dampers have two kinds of adjustable dampers normally open valve and exhaust; 2. smoke exhaust valves are normally closed fire dampers, exhaust valves and automatic smoke damper three kinds; 3. exhaust port. Advantages damper: 1, low air leakage round damper, superior air tightness performance; 2, the electric current consumption is small open; 3, excellent corrosion resistance, durable (made of stainless steel); 4, the actuator drive flexible feedback interlock signal accurately; [Jie Weinuo Star Industrial Co., Ltd.] recommended damper damper is made of; galvanized steel, cold plate. Divided into 70 degrees / 150 degrees / 280 degrees for fire smoke, etc., underground parking. Shopping malls, factory production of high-end residential fire smoke dampers, exhaust valves, plate exhaust valves, electric air valve with professional and technical personnel fabrication and installation.