210 / | HD | LIQUID PURIFICATION OR SEPARATION |
600 | DF | PROCESSES {14} |
767 | DF | .~ Separating {16} |
787 | .~.~ Cyclonic, or centrifugal (e.g., whirling or helical motion or by vortex, etc.) {2} | |
788 | DF | .~.~.~> Introducing liquid tangentially |
789 | DF | .~.~.~> Isolating layer |