| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a connection structure in which a tightening tool such as a spanner can be used in a tightening work of a connection part in the connection structure of a buffer tank which is connected for use to a side of the piping. SOLUTION: A connection part 4 projected from a tank part 3 is communicated with a lower part of a buffer tank 1, a flange 41 is formed on the connection part 4, and a metallic cap nut 6 is covered on the flange 41. A male screw part 72 to be screwed into a female screw part 61 formed in the cap nut 6 is formed on an upper part of a nipple 7 connected to the piping. A packing 8 is interposed between the flange 41 and an upper end of the nipple 7.</p> |
