[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product] 1 --70 ° damper damper with fan, exhaust fan interlock. 2. The side of the valve operating mechanism should be not less than 200mm of headroom to facilitate maintenance. 3. The valve must be checked before installation of the valve operating mechanism is intact smoke damper, flexible and effective action is. The damper should be installed in the duct segments close to the wall or floor, the fire dampers on both sides of the partition wall from the wall surface should not exceed 200mm, dampers and pipe insulation material on both sides of each 2.0m wide should be non-combustible material. 5. The damper should set up a separate hanger to prevent pipe deformation affecting its performance in case of fire. 6. damper fuse should be installed in a large piece of the side facing the fire risk. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - damper] smoke dampers are mainly used on duct ventilation and air conditioning systems, usually in a "normally open" state, when the air temperature reaches 70 ℃ When, through the action of the valve automatically closes the fuse. Exhaust port, exhaust valve is mainly set in the pipe exhaust system, or installed in the inlet of the exhaust fan fire, usually turned off, in case of fire, through interaction, automatically turn on the exhaust. Fire damper is installed in the exhaust fan at the entrance and ventilation and air conditioning systems use either system, usually in a "normally open" state dampers, ventilated, when the internal temperature reaches 280 ℃ pipeline flow, the valve by temperature fusible metal fuse action automatically shut down, cutting off airflow to prevent the spread of fire. There are some buildings in fire protection engineering projects to reuse these devices circumstances. Such as Chongqing Tobacco Building is an example. Automatic tobacco smoke damper Chongqing mainly office and commercial buildings, walkways long electric control valve, set the mechanical valve exhaust system, each floor is only a smoke partition. Smoke on each floor electric charge of the design of a normally closed damper, each of each exhaust port has designed an electric normally closed exhaust valves, exhaust fan inlet of the fire has designed a normally closed electric smoke damper. Obviously, this design features a waste of existence, but also modules, valves, construction costs of waste. Recommendation: One way is to exhaust port and exhaust valve module canceled, changed to single outlet louvers; second method is to normally closed damper on each electric charge of the smoke into the normally open 280 degrees Close the damper, the control module to the general monitoring module. Both methods achieve the same fire code requirements, and the actual control is also very reliable. Electric control valve _ _ Beijing, Tianjin Jinzhong Ji damper valve provided by the Tianjin factory Jinzhong Ji HVAC purification equipment. Tianjin Jinzhong Ji 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!