| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 105 | DF | CONTROL ELEMENT RESPONSIVE TO A SENSED OPERATING CONDITION {6} |
| 108 | | .~ Control element responds proportionally to a variable signal from a sensor {2} |
| 109 | DF | .~.~> Controls heat transfer |
| 110 | DF | .~.~> Controls flow rate of a material to or from a contact zone {1} |