| 137 / | HD | FLUID HANDLING |
| 561 R | DF | SYSTEMS {32} |
| 625 | DF | .~ Multi-way valve unit {12} |
| 625.12 | DF | .~.~ Sequentially progressive opening or closing of plural ports {1} |
| 625.13 | DF | .~.~.~ With subsequent closing of first port {2} |
| 625.15 | DF | .~.~.~.~ Rotary {1} |
| 625.16 | | .~.~.~.~.~ Plug |