[Tianjin Jin Zhongji HVAC purification equipment to recommend the star product - damper] such valves generally located in the ventilation and air conditioning pipes through the fire zone. Usually turned off to cut off when the fire smoke, the fire spread along the ventilation ducts to other fire district. This class is divided into the following three categories damper have: 1. driven by the installation in the valve body temperature fuse action valve interlocking mechanism dampers. The temperature fuse fusible or fusible ring fusing temperature 70 ℃, the most widely used of such dampers. 2. 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, normally closed damper, also known as fire control valve. 3. by the temperature sensor located in the ceiling of linkage damper, such valves are often called smoke valve. According to project needs, Tianjin damper, some with a temperature fuse both the dampers and smoke detectors and linkage, these valves as smoke dampers. In the dual-purpose system, some air vents located on the trunk. When the exhaust vent should be closed, smoke damper 280 degrees, then you can use a combination of fire dampers and Grille fire vent. [Tianjin Jin Zhongji HVAC purification equipment to recommend the star product --FT series air flow control valve] FT series air flow control valve is the company developed and produced a new type of air flow control valve, which combines foreign and domestic damper valve The little, simple and reasonable structure, leak a small amount of small friction torque, flexible operation, blade rigid, corrosion-resistant, variety and so on. Generally divided into multi Yefeng off manually adjusting valve (rectangular and circular), electric off more Yefeng volume control valve (rectangular and circular), sealed off more Yefeng manual volume control valve (rectangular and circular), electric closed off more Yefeng volume control valve (rectangular and circular). 70 degrees normally open damper, Tianjin damper, the base is provided by Tianjin Jin Zhongji HVAC purification equipment. Tianjin Jin Zhongji HVAC purification equipment Limited (www.Jzjnt.com) strong, credible, in Tianjin fans, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the group into the brilliant and you work for a better future!