| 285 / | HD | PIPE JOINTS OR COUPLINGS |
| 120.1 | ![]() | HAVING PLURAL INDEPENDENT PATHS {4} |
| 121.1 | DF | .~> Allowing relative motion of pipes {3} |
| 122.1 | DF | .~> And at least one path having branched flow |
| 123.1 | DF | .~> For concentric tubes or pipes (e.g., well casing or wellhead type) {4} |
| 124.1 | DF | .~> Parallel paths {2} |