| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to easily execute the selection of the branch pipes to be passed by providing the branch forked parts of a branch part with a means for shutting off the communicating path to the branch pipes. SOLUTION: A master pipe 1 is connected to the branch part 3 and the plural branch pipes 2A, 2B are connected to the branch part 3. A valve 4 is formed in the branch forked part 32 of the branch part 3. This valve 4 has a revolving shaft 41 disposed integrally with the valve 4 in the direction perpendicular to the branch forked part 32. One end of the revolving shaft 41 is exposed outside through the branch pipe penetrating part and is operated by a driving means, such as a motor, by which the valve 4 is moved toward the opposite surface 31 of the branch forked part 32 to shut off the communicating path 33 of the branch pipe 2B to be passed. Consequently, the optical cable forcibly fed by fluid to the main trunk pipe 1 from the optical cable entrance end is entrained in the flow of the fluid and is passed to the opened branch pipe 2A to be passed. |
