| 65 / | HD | GLASS MANUFACTURING |
| 17.1 | DF | PROCESSES {32} |
| 126 | DF | .~ Discharging molten glass downwardly through orifice {3} |
| 129 | ![]() | .~.~ Regulating or arresting of flow into or out of orifice {2} |
| 130 | DF | .~.~.~> With or by differential gas pressure {1} |
| 132 | DF | .~.~.~> With segregation prior to discharge |