| 摘要 |
A positive-action non-leaking shut-off valve that requires minimal arcuate movement of the manual actuator from full-open to full-closed position is provided by three major components. A valve housing has a water-flow channel therethrough along its longitudinal axis and a cylindrical bore through said valve housing transversal to said water-flow channel. A lever-actuated valve shaft fits snugly into said bore. The valve shaft carries a plug therein that is centered for rotation about the centerline of the bore through the housing. The plug stoppers the water-flow channel when it is rotated against the openings that the water-flow channel makes with the cylindrical bore.
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