按其功能可分为防火阀和排烟防火阀两大类。
By different functions it can be categorized into smoke damper and smoke fire damper.
温度熔断器是（排烟）防火阀中的重要部件之一，而其中的易熔片又是熔断器的关键元件。
Temperature-dependent fuse is one of the important parts in (smoke) fire dampers, and the fusible alloy is the key element of the fuse.
本文对暖通设计中通风空调及排烟系统的划分、防火阀的设置等工程设计中常见的问题进行了探讨。
The paper discusses some common problems in the engineering design of the classification of air-conditioner system and smoke ventilation system as well as the set up of the fire valve.
不同于常规变电站的防排烟设计，电气设备间的消防设计不仅考虑火灾后的排烟，而且考虑人员的安全疏散，排烟风机和各种防火阀既能集中控制，亦可就地控制。
The smoke proof design of the electric equipment room is done with the considerations not only of the ventilating after fire, but also of the operators evacuating.
不同于常规变电站的防排烟设计，电气设备间的消防设计不仅考虑火灾后的排烟，而且考虑人员的安全疏散，排烟风机和各种防火阀既能集中控制，亦可就地控制。
The smoke proof design of the electric equipment room is done with the considerations not only of the ventilating after fire, but also of the operators evacuating.
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