| 摘要 |
PURPOSE: A ball valve for preventing opening of a flow path due to the ball is rotated by vibration is provided to accurately control the opening and closing of a flow path. CONSTITUTION: A ball valve comprises a housing(20), a ball, a manipulating handle(40), and a stem. A flow path(21) is formed in the housing. The housing comprises a pin hole, stopping bar recess, a pin(27), a stopping bar(29), a spring, and a stopper. The spring is inserted to the stopping bar and supports the stopping bar to make one part of the stopping bar to be exposed. The ball is inserted into the housing to open and close the flow path. The manipulating handle comprises an open groove(43), a close groove(45), and an O-ring. The stem rotates the ball in order to open and close the flow path in the rotation of the manipulating handle.
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