| 165 / | HD | HEAT EXCHANGE |
| DIG 184 | DD | INDIRECT-CONTACT CONDENSER {12} |
| DIG 187 | DD | .~ Having pump downstream of condenser {1} |
| DIG 188 | | .~.~ Pump to remove only uncondensed vapor or air {3} |
| DIG 189 | DD | .~.~.~> From a first-stage direct-contact condenser |
| DIG 190 | DD | .~.~.~> Including second-stage indirect-contact condenser |
| DIG 191 | DD | .~.~.~> Including second-stage direct-contact condenser |