| 摘要 |
The present invention is directed toward a contamination control arrangement for a valve having a valve housing, a land positioned in the valve housing, a valve member including a valve shaft and a valving portion operable for engaging a valve seat, slidably disposed through the land, and a supply port operably associated with the valve member. The valve also includes a control chamber controlled by the valving portion, and a valve seat positioned between the supply port and the control chamber. The valve member is operably associated with the valve seat for controlling the flow of fluid from the supply port to the control chamber upon the movement of the valve member in relation to the valve seat. There is also a contamination control arrangement positioned between the land and the valve shaft for centering and removing contamination from the valve member. |
