| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a test plug in which, during work for releasing water within a pipeline, an accident such as splash of water or flooding is prevented and the quantity of water to be drained can be appropriately adjusted also without exerting adverse influences on neighboring other members. <P>SOLUTION: A basement part 14 and a hollow pipe-like part 15 of a spindle 13 are accommodated in a hollow part 12b of a cylindrical main body part 12 so as to rotationally move back and forth in an axial direction. The hollow pipe-like part 15 of the spindle 13 extends in the axial direction from the basement part 14 to a distal end part 15a, that distal end part 15a is opened, and a small diameter hole 15d is formed for communicating to the hollow part 12b of the cylindrical main body part 12. Water supplied from a pipeline is passed through the small diameter part 15d to remarkably weaken flowing power and is calmly discharged from an opening end 15b of the distal end part 15a of the spindle 13. Furthermore, a plug main body part 10 including the cylindrical main body part 12 is formed in a longitudinally long pipe shape having an outer diameter corresponding to an aperture of an instrument mounting port. <P>COPYRIGHT: (C)2013,JPO&INPIT |
