| 摘要 |
A valve arrangement having a valve body with an inlet passage and an outlet passage. A valve seat is disposed in the valve body and forms an aperture positioned in the path of fluid flow between the inlet and outlet passages. A shaft member is disposed within the valve body and has a flow control member connected to the end of the shaft. The flow control member has a valve portion for operably engaging the valve seat and a valve extension portion that extends from the valve portion and circumscribes the shaft in order to shield the shaft from being exposed to contaminants. The valve portion and valve extension portion are integrally formed into a one-piece member thus eliminating an additional component in the valve design.
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