<p>A method for partially stroking an emergency valve apparatus is provided. The emergency valve apparatus comprises an actuator (103) and a valve member (101). The apparatus is movable between a first position and a second position. The method comprises the step of initiating a partial stroke movement of the apparatus from the first position towards the second position. A parameter of the fluid acting on the apparatus is measured. Once the measured parameter reaches a threshold value, the partial stroke movement is reversed.</p>
申请公布号
WO2010010315(A1)
申请公布日期
2010.01.28
申请号
WO2008GB02555
申请日期
2008.07.25
申请人
NORGREN LIMITED;THOMPSON VALVES LIMITED;WHEATER, CHRISTOPHER, JOHN;HORSFIELD, DAVID