This translation is wrong; it defines a ball valve as a valve that controls water flow, which is not what was meant in the original.
here is a much better (and more correct) one:
Type: Posts; User: Mike K.; Keyword(s):
This translation is wrong; it defines a ball valve as a valve that controls water flow, which is not what was meant in the original.
here is a much better (and more correct) one:
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