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The water pipe valve is locked, how to open it with a key?
In fact, this is very simple, although it is called locking valve ~ but the structural principle of the lock on this valve is very simple, that is, changing the shape of the valve stem.
You lost your key, so hold it with a wrench or vice and turn it. This kind has a protruding valve stem.
One is that the valve stem is recessed, and this screwdriver with your character is just inserted and turned.
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