| 165 / | HD | HEAT EXCHANGE |
| DIG 135 | | MOVABLE HEAT EXCHANGER {4} |
| DIG 136 | DD | .~> Movable belt or strip transfers heat to or from objects or material thereon |
| DIG 137 | DD | .~> Unconstrained movement (e.g., float, etc.) |
| DIG 138 | DD | .~> Partially rotable (e.g, rocking, pivoting, oscillation, tilting, etc.) |
| DIG 139 | DD | .~> Fully rotatable {5} |