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1·And it can change cutting length follow to different size of fire damper optionally.

并且可以根据阀体的大小，随意调节叶片长度，定尺切断。

2·By different functions it can be categorized into smoke damper and smoke fire damper.

按其功能可分为防火阀和排烟防火阀两大类。

3·8226; Product description: Automatic fire damper blade roll forming machine run by chain drive types, it can suit different production requirement.

产品说明：全自动叶片成型设备墙板链条式传动，可以适合不同企业的生产要求。

4·It mainly deals with the design method and principle of fire damper, positive pressure control, ventilation of stair room and running logic of HVAC in emergence situation.

正压控制的设计原则和方法；楼梯间的通风设计以及紧急状态下HVAC系统的运行逻辑设计。

5·Discusses some unclear, inconsistent or inaccurate points of fire damper installation in the related codes governing building fire protection, and offers the author's recommendations for revision.

讨论了几个现行规范在防火阀设置问题上规定不明确、不一致或不准确之处，提出了具体的修改建议。

6·Gas fire controller has various functions such as failure alarm, closing blower fan and fire damper, and can feedback manual, automatic, alarming, failure and spray signals to the fire control centre.

气体灭火控制器主要具有各种故障报警及关闭风机、防火阀等联动功能，并实现建手动、自动、报警、故障、喷放等信号反馈至消防联动控制中心。

7·The method is also suitable for fire -regulating damper and smoke -discharging damper.

该法也适用于防火调节阀和排烟阀的性能试验。