Should a valve need repair, depressurize and drain the system on both sides of the valve.
如果一个阀门需要维修,则在阀门的两侧对系统进行
压和排放。
压,使降压
词
词Should a valve need repair, depressurize and drain the system on both sides of the valve.
如果一个阀门需要维修,则在阀门的两侧对系统进行
压和排放。
Always depressurize a regulator before closing the adjusting knob and removing the regulator from the cylinder.
在关闭调
钮和从钢瓶上断开调
之前,总是使调

压。
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