发明名称 |
Fluid flow and pressure control system and method. |
摘要 |
A system and method for controlling fluid according to which an inlet passage and an outlet passage are formed in a housing and a choke member is movable in the housing to control the flow of fluid from the inlet passage to the outlet passage and to exert a back pressure on the fluid. The movement of the choke member from a fully closed position to an open position is dampened. |
申请公布号 |
ZA200109593(B) |
申请公布日期 |
2002.09.25 |
申请号 |
ZA20010009593 |
申请日期 |
2001.11.21 |
申请人 |
M-I L.L.C. |
发明人 |
LESTER L. CAIN;ROGER SUTER |
分类号 |
E21B21/10;F16K31/12;F16K47/04 |
主分类号 |
E21B21/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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