Wo2009055633
A technology for pipe joints and pipes, applied in the field of pipe joints, can solve the problems of ineffective locking and the inability of the locking piece to withstand the connecting end.
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[0046] figure 1 A pipe connection according to the invention is shown, designated as a whole by the reference numeral 2 .
[0047] The pipe connection 2 has a first pipe part with a joint end 4 , a second pipe part with a coupling end 6 , a sealing ring 8 , an anti-extrusion part 10 and a locking part 12 .
[0048] The pipe joint 2 defines a central axis X-X. "Axial", "radial" and "circumferential" in the following description are all relative to the central axis X-X.
[0049] The engagement end 4 and the coupling end 6 are made of cast iron, for example. In addition, the piping members may be covered with a protective layer not shown.
[0050] The joint end 4 has a fixed flange 14 for assembly with a pipe member (not shown) with a corresponding flange and a free end 16 facing the coupling end 6 in the unassembled state. The joint end 4 also has an annular inner groove 18 (see figure 2 ). Here, the inner groove 18 has a substantially circular cross-section, but other sh...
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