| 165 / | HD | HEAT EXCHANGE |
| DIG 92 | DD | WITH VALVE OR MOVABLE DEFLECTOR FOR HEAT EXCHANGE FLUID FLOW {6} |
| DIG 101 | DD | .~ For controlling supply of heat exchange fluid flowing between hydraulically independent heat exchange sections {2} |
| DIG 104 | DD | .~.~ Hydraulically independent heat exchange sections connected in parallel {2} |
| DIG 105 | | .~.~.~ Correlated valves |