| 251 / | HD | VALVES AND VALVE ACTUATION |
| 89 | DF | WITH MEANS FOR BLOCKING OR DISABLING ACTUATOR {6} |
| 111 | DF | .~ Latch manipulator mounted on valve body {3} |
| 114 | ![]() | .~.~ With pivoted latch {2} |
| 115 | DF | .~.~.~> Resilient latch and manipulator |
| 116 | DF | .~.~.~> With spring |