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 |