| 摘要 |
<p>A fluid control valve including a housing clampable between pipe flanges of pipes leading to and from the housing. A valve module is detachably insertable in said housing and includes a valve duct having a cylindrical shaped seat surface and a pivotally mounted valve body having a curved surface conforming in shape to the seat surface. The valve body is pivotally mounted at an extension of the valve duct. The pivot axis for the valve body is spaced from the center of curvature of the valve seat surface.</p> |
