| 摘要 |
PROBLEM TO BE SOLVED: To provide a coupling allowing easy and sure visual confirmation of the insertion of a resin pipe into a coupling main body from the outside in an inspection after an execution. SOLUTION: This coupling is formed into a cylindrical shape and is provided with a coupling main body 11 insertable with the resin pipe 21 therein, a cylindrical push ring 14 screwed into a distal end part of the coupling main body 11 and a lock ring 22 held within the coupling by the push ring 14 to prevent slipping-out of the inserted resin pipe 21. This coupling is provided with an in-core 30 to prevent deformation of the resin pipe 21 to the inside when the coupling is interpolated into an end part of the resin pipe 21 and the resin pipe 21 is inserted into the coupling. A chamfering part 34 reducing a diameter from an insertion hole side end edge 26 toward the inside of an axis direction of the coupling main body 11 is provided to visually confirm an inner end part of the in-core 30 interpolated into the resin pipe 21 after the execution. COPYRIGHT: (C)2004,JPO
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