发明名称 FLUID FLOW AND PRESSURE CONTROL SYSTEM AND METHOD
摘要 <p>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.</p>
申请公布号 EP1183478(A1) 申请公布日期 2002.03.06
申请号 EP20000923628 申请日期 2000.04.28
申请人 M-I L.L.C. 发明人 CAIN, LESTER, L.;SUTER, ROGER
分类号 E21B21/10;F16K31/12;F16K47/04;(IPC1-7):F16K31/12 主分类号 E21B21/10
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