... Hose connections(软管连接) Double-seal valves(双向密封阀) Bottom drain valves(底部泄放阀) ...
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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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