261 / | HD | GAS AND LIQUID CONTACT APPARATUS |
19 | DF | FLUID DISTRIBUTION {5} |
38 | DF | .~ Valved {8} |
42 | DF | .~.~ Multiple valves {5} |
43 | DF | .~.~.~ Connected {4} |
44.1 | DF | .~.~.~.~ Contact space {5} |
44.6 | .~.~.~.~.~ Rotating air or mixture valve {2} | |
44.7 | DF | .~.~.~.~.~.~> Off-center pivoted |
44.8 | DF | .~.~.~.~.~.~> Cylinder or plug-valve type |