| 摘要 |
<p>An apparatus for a valve assembly (10) comprises a valve body (12), a valve element (14), a shaft (16), an engagement stop (18), an actuator housing (19), a manual lockout (20), and a lock (22). The valve body (12) includes an inlet port (28), an outlet port (30), and a flow passage (32) extending therebetween. The valve element (14) is disposed within the valve body flow passage (32), and is movable between a closed position and a full-open position. The shaft (16) is coupled to the valve element (14) and extends through the valve body (12). The engagement stop (18) is coupled to, and extends radially from, the shaft (16). The actuator housing (19) at least partially surrounds the shaft (16). The manual lockout (20) is configured, upon receipt of a torque, to selectively engage and disengage the engagement stop (18). The lock (22) is coupled to the actuator housing (19), and is movable between a lock position and an unlock position.</p> |
