关断阀 meaning in English

closing valve
cut-off valve

The gips / gdps series of automatic shut - off valves are safety devices designed to stop the flow of gas when the downstream pressure of the valve reaches a value larger than and / or smaller than the preset operating limit
升压感应关断型?与gdps ?降压感应关断型?系列自动关断阀为安全设备，设计当此阀下游压力达到大于或?和?小于预定操作限度的压力值时，来中断瓦斯流动。
The gascat gips / gdps series of automatic shutoff valves are used as the main safety device for transmission , distribution and measurement of natural gas or lpg gas system protection , and for non - corrosive gas systems in general
升压感应关断型?与gdps ?降压感应关断型?系列自动关断阀适用于天然气或液化石油气之输送、配气与计量系统，还有一般无腐蚀瓦斯气体系统保护的主要安全设施。