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原文
Main points of the selection of damper 1 dampers used for the specification of the main control parameters. 2 dampers for ventilation and air conditioning systems, in addition to public buildings in the kitchen hood system with fire damper, operating temperature of 150 ℃, in general, ventilation and air conditioning system with dampers operating temperature is 70 ℃. 3 dampers for ventilation, air conditioning or exhaust system pipe. 4 used valve should pay attention to the valve function, as usual open or normally closed, automatic turn off, turn off manual, manual reset, signal output, remote control and other requirements. 5 If the valve linkage and the fans should be used with dual micro switch device. 6 should be steel blade body, a thickness of 2 ~ 6mm, body of non-combustible material, rotating parts should be corrosion-resistant metal materials, and flexible rotation. Valve shell thickness of not less than 2mm. Easy to melt parts of the fire department should be consistent with recognized standards.
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译文：
1.防火阀选用主要控制参数为规格等。 2.防火阀适用于通风空调系统，除公共建筑的厨房排油烟系统用防火阀，动作温度为150℃外，一般通风空调系统用防火阀动作温度为70℃。 3.防火阀适用于通风、空调或排烟系统的管道上。 4.选用阀门时应注意阀门的功能，如常开还是常闭、自动关闭开启、手动关闭开启、手动复位、讯号输出、远距离控制等要求。 5.阀门若与风机联动的应选用带双微动开关装置。 6.阀体叶片应为钢板，厚度为2~6mm，阀体为不燃材料制作，转动部件应采用耐腐蚀的金属材料，并转动灵活。阀门的外壳厚度不得小于2mm。易融部件应符合消防部门的认可标准。

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