发明授权
- 专利标题: Valve assembly with removable packing
- 专利标题(中): 阀组件带可移动包装
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申请号: US736216申请日: 1991-07-26
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公开(公告)号: US5107882A公开(公告)日: 1992-04-28
- 发明人: James L. Carroll
- 申请人: James L. Carroll
- 申请人地址: CO Aurora
- 专利权人: Hefner; John M.
- 当前专利权人: Hefner; John M.
- 当前专利权人地址: CO Aurora
- 主分类号: F16K27/02
- IPC分类号: F16K27/02 ; F16K41/02
摘要:
A valve assembly includes a self-contained, packing removal means for removing the valve packing. The valve assembly includes a valve stem connected at one end to a valve, a bonnet for mounting the valve stem on a valve body having a valve seat engageable with said valve on said valve stem, and means for raising and lowering said valve stem to selectively open and close said valve. The bonnet includes a packing chamber through which an intermediate portion of the valve stem extends. The packing removal means comprises a radially displaceable lifting element disposed within the valve stem and movable to an extended position where it engages the packing assembly from underneath upon operation of the valve stem to lift the valve packing from the packing chamber.
公开/授权文献
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