fire resistance requirement meaning in English

防火要求

Fire proof valve refers installed in the ventilation , air - conditioning systems to send , and the road back to the wind , opened in a state of fire when the temperature reached 70 degrees , the gas automatically closed in a certain period of time to meet the fire resistance requirements of the stability and integrity of fire resistance , a possible role of the fire fight valves
防火阀是指安装在通风、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。