The unit to base electrical plug permits instant valve unit replacement without disconnecting piping or wiring.
该单位的基础电器插头未经允许即时阀断开管道或电线单位更换。
When disconnecting cylinders with diaphragm valves, it is most important to double close the valve and to properly install the outlet seal.
当切断钢瓶和隔膜阀的连接时，两次关闭阀门和正确安装排气口密封是最重要的。
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