251 / | HD | VALVES AND VALVE ACTUATION |
304 | DF | ROTARY VALVES {5} |
315.01 | DF | .~ Ball valve {7} |
315.1 | .~.~ Housing construction {4} | |
315.11 | DF | .~.~.~> Head removable perpendicular to flow passage {1} |
315.13 | DF | .~.~.~> Assembled around the head |
315.14 | DF | .~.~.~> Head removable along one side of flow passage |
315.15 | DF | .~.~.~> Having inseparable head |