| 摘要 |
An embodiment of a valve includes a housing having at least an actuator chamber above a main fluid passage. A flow control member is mounted to a first longitudinal end of the valve shaft (26) extending into, and is rotatable in, the main fluid passage. The linear actuator (36) is retained in the actuator chamber, and includes a piston rod (50) connected to at least one piston (46), (48), and a slot formed transverse to a length of the piston rod (50). A yoke assembly (40) includes a crank (42) connected proximate to the second end of the valve shaft (26), a bearing assembly connecting the valve shaft (26) and the piston rod (50) includes at least one bearing connected to the crank (42) such that the yoke assembly (40) is adapted to translate linear motion of the piston shaft (50) to rotational motion of the valve shaft (26), and vice versa. |
