| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pipe fitting capable of certainly preventing wrongful extension of a pipe body and free to extensively apply to facility piping on a building, etc. SOLUTION: It is constituted by inserting one end part of each of fitting main bodies 13, 13 in a space part 5 formed between an interior pipe 1 and an exterior pipe 4 respectively free to slide, arranging ring protruded parts 15 provided on the one end parts of the fitting main bodies 13, 13 in the space part 5 and partitioning the space part 5 into an intermediate chamber and a pair of front and rear end part chambers 17, and through holes 18 communicated to the end part chambers 17 are drilled and provided on the fitting main bodies 13, 13 so that circulating fluid can flow in and out of the end part chambers 17.</p> |
