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Thread ball valve (ball valve) is a ball, the ball around the center line of the valve body for rotation to open, close a valve.

Ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. Two-piece ball valve, three-piece ball valve, is a new type of valve widely used in recent years, the valve is generally installed horizontally. Thread ball valve is a kind of ball valve, and the connection form of pipeline is thread connection, there are flange ball valve, welding ball valve and so on.