| 摘要 |
A pipe end fitting (13) has a cup-shaped body (15) for fitting on the end of a pipe (14), and gripping (20, 22) and sealing (18) assemblies that fit radially inside the pipe and the cup-shaped body and are radially expandable to engage the pipe interior. The gripping assembly Includes a toothed expandable assembly (20) and an expansion mandrel (22) that is urgeable axially into the cup to expand the expandable assembly. This also axially compresses the sealing assembly (18), which is formed of at least two annular bodies (30, 34) and two sealing rings (42, 56). At least one body has a ramp surface (74, 76) that urges radial expansion of a sealing ring (42, 54) to seal to the pipe.
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