发明授权
US07520333B2 Hydraulic sleeve valve with position indication, alignment, and bypass 有权
带位置指示,对位和旁路的液压套筒阀

Hydraulic sleeve valve with position indication, alignment, and bypass
摘要:
A hydraulic sleeve valve is disclosed that comprises a bypass relief system that provides an indication that the valve has reached a predetermined position, such as, for example, the fully opened or fully closed condition. The bypass relief may also provide a valve control fluid circulation function to filter or otherwise manipulate the control fluid. Also disclosed are flow port alignment systems that maintain the valve flow ports in predetermined relationships.
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