| 431 / | HD | COMBUSTION |
| 159 | DF | FUEL DISPERSER INSTALLED IN FURNACE {10} |
| 174 | DF | .~ Spaced fuel dispersing orifices within furnace {4} |
| 175 | ![]() | .~.~ Intersecting fuel streams {1} |
| 176 | DF | .~.~.~> Opposed rows of streams of radially directed streams in a common plane |