251 / | HD | VALVES AND VALVE ACTUATION |
89 | DF | WITH MEANS FOR BLOCKING OR DISABLING ACTUATOR {6} |
101 | DF | .~ Latch manipulator mounted on handle or stem {3} |
102 | DF | .~.~ Constrained linear motion {3} |
104 | DF | .~.~.~ With latch rigidly associated with manipulator {1} |
105 | .~.~.~.~ Latch lug extends transversely to axis of manipulator |