| 209 / | HD | CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS |
| 422 | DF | STRATIFIERS {6} |
| * | DD | .~ With liquid treatment {3} |
| * | DD | .~.~ Movable bed {3} |
| * | | .~.~.~ Chutes and tables {4} |
| 434 | DF | .~.~.~.~> Spiral |
| 435 | DF | .~.~.~.~> Reciprocating-rotating {1} |
| 437 | DF | .~.~.~.~> Reciprocating {5} |
| 444 | DF | .~.~.~.~> Rotating |