| 摘要 |
a) Ball valve, b) characterised in that: a) the passage (11) of one of the discs (8) is split into two distinct pipes (15, 16) on the face opposite the ball (1), b) the ball (1) exhibits, on its outside surface, a recess (19) in the form of a cap placed perpendicularly to the axis of the through-bore (13) placed in its middle, which cap extends as far as into the through bore (13), c) the recess (19), the median axis of which is perpendicular to the median axis of the through bore (13) rests, when the tap is closed or perpendicularly to the direction of passage of the tap with respect to the turned median axis of the passage bore (13) or, seen from the outside, to the rear of the passage (11) of one of the discs (8) with the two pipes (14, 16). <IMAGE>
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