Product is mainly used for fire dampers and smoke dampers installed on the duct ventilation and air conditioning systems, usually in a "normally open" state, when the air temperature reaches 70 ℃, by internal fuse action valve automatically closes. Exhaust port, exhaust valve is mainly set in the pipe exhaust system, or installed in the inlet of the exhaust fan fire, usually in the closed state, the sample case of fire dampers, 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, ventilation, air flow in the pipe when the temperature reaches 280 ℃, the valve by fusible metal temperature fuse action automatically closed, cutting off airflow to prevent the spread of fire. One of the product is to use the exhaust valve and the exhaust port module canceled vent louvers into monolayer; second method is to normally closed damper on each electric charge of the smoke into the normally open 280 degrees Close the damper damper control module to the general monitoring module. Both methods achieve the same fire code requirements, and the actual control is also very reliable. 1. The construction and installation of fire dampers can edit and fan, exhaust fan interlock. 2. The operation of the valve mechanism side 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. Harbin damper damper module _ _ Rui Xincheng Rui Xincheng air conditioning provided by the Texas Air Conditioning Equipment Co., Ltd .. Texas Rui Xincheng Air Conditioning Equipment Co., Ltd. (www.dzrxckt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Rui Xincheng air conditioning and you hand into the brilliant, for a better future!