| 摘要 |
<p>A valve comprising a valve body having an inlet and an outlet; a valve member moveable in a linear direction with respect to the valve body between a closed condition in which flow between the inlet and the outlet is restricted and an open condition; and an actuator coupled to the valve member such that the valve member is constrained to rotate with the actuator and is movable in the linear direction with respect to the actuator, wherein the valve is configured such that rotation of the actuator causes the valve member to move in the linear direction with respect to both the actuator and the valve body between the closed condition and the open condition.</p> |
