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, the action is flexible and effective. 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. Product is mainly used for smoke dampers on duct ventilation and air conditioning systems, usually in a "normally open" state, dampers sales 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 turned off, in case of fire, through interaction, automatically turn on the exhaust. Fans entrance damper damper installed in the exhaust system specifications and ventilation and air conditioning systems use either, usually in a "normally open" state damper, ventilated, when the temperature of the air inside the pipe up to 280 ℃, the valve by temperature fusible metal fuse action automatically shut down, cutting off airflow to prevent the spread of fire. Construction and installation points 1. Valve mounting position, height, and export orientation must meet the design requirements, the connection should be firmly tight. 2. The valve means of various forms of end portion connected to the pipe line. The most important connections are threaded, flanged and welded connections. When the flange connection, if the temperature exceeds 350 ℃, due to bolts, flanges and gaskets creep relaxation, you should choose high temperature bolt material. 3. The valve must be visually inspected prior to installation, the valve plate should be consistent with existing national standards GB12220 "Universal Valve logo" requirement. For working pressure greater than 1.0MPa and the role played off valves on the main pipe, should be the strength and tightness test, passing behind the prospective use. Other valves may not be tested separately damper parts, stay in the system pressure test test. 4. strength test, the test pressure is 1.5 times the nominal duration of not less than 5min, the valve housing, packing should be no leakage. 5. Tightness test, the test pressure of 1.1 times the nominal; test pressure in the test duration should remain unchanged, the time should meet the requirements of Table 2, the valve sealing surface without leakage is qualified. _ _ Rui Xincheng smoke damper damper air conditioning provided by Rui Xincheng Air Conditioning Equipment Co., Texas. 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!