| 摘要 |
PROBLEM TO BE SOLVED: To provide a slip-off preventing device for piping capable of connecting and disconnecting piping very easily and in a short time. SOLUTION: This device is provided with an inner pipe 16 inserted in and connected to an outer pipe 11. Plural locking parts 18 are formed to dent over axial direction of the inner pie 16. A stopper 14 projecting to inside of the outer pipe 11 and engaging with a locking part 18 is provided. An inclining wall 19A inclining to gradually lower toward an end part direction of the inner pipe 16 which is inserted in the outer pipe 11 and a vertical wall 18D rising from a lower end of the inclining wall 19A is formed. The stopper 14 engages with the vertical wall 18D of the locking part 18 to prevent slip-off of the inner pipe 16 from the outer pipe 11.
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