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谁防火阀机构的原理图

更新时间: 2020-09-17 00:00:00     

原理:安装在通风、空调系统的送、回风管路上,平时呈开启状态,火灾时当管道内气体温度达到70℃时,易熔片熔断,阀门在扭簧力作用下自动关闭,在一定时间内能满足耐火稳定性和耐火完整性要求,起隔烟阻火作用的阀门;阀门关闭时,输出关闭信号。

关键词: 防火 机构 原理

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