| 摘要 |
<p>In a preferred embodiment, in a fluid flow valve (10) having a body (12) and having a movable member (82) with lower face, the movable member (82) being movable between a position spaced from a sealing position in the body (12) when the valve (10) is in the open position and movable to the sealing position when the valve (10) in the closed position, the improvement including: an annular sealing member (100) disposed in the outer periphery of the lower face of the movable member (82) to sealingly engage a portion of the body (12) when the valve (10) is in the closed position.</p> |
