发明申请
- 专利标题: SLOW-SHIFT SPM VALVE
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申请号: US16410089申请日: 2019-05-13
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公开(公告)号: US20190264829A1公开(公告)日: 2019-08-29
- 发明人: James Ray Landrith, II , Frank B. Springett , Eric Trevor Ensley , Jonathan Lewis Buelow , James W. Weir , Travis James Miller
- 申请人: National Oilwell Varco, L.P.
- 申请人地址: US TX Houston
- 专利权人: National Oilwell Varco, L.P.
- 当前专利权人: National Oilwell Varco, L.P.
- 当前专利权人地址: US TX Houston
- 主分类号: F16K31/06
- IPC分类号: F16K31/06 ; F16K11/044 ; F16K3/24 ; F16K47/02 ; F16K31/122
摘要:
A subplate mounted (SPM) valve includes a valve body having pilot port, a piston configured to be actuated by fluid from the pilot port, a first control chamber and second control chamber each formed in the valve body and fluidicly isolated from the pilot port, a first flow restrictor fluidicly disposed between the first control chamber and the second control chamber and configured to restrict flow in at least one direction between the first control chamber and the second control chamber, a cage coupled to the valve body and having a supply port, a return port, and a work port, and a spool slidably engaged with the cage and configured to selectively restrict flow between the supply port and the return port by actuation of the piston.
公开/授权文献
- US11536390B2 Slow-shift SPM valve 公开/授权日:2022-12-27
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