Method of pipe replacement (no.1)

Details Method of pipe replacement (no.1) Method of pipe replacement (no.1)

F - Mech Eng,Light,Heat,Weapons

16

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61/5.1

F16L 1/00 (2006.01) E21B 7/20 (2006.01) E21B 7/30 (2006.01) F16L 55/165 (2006.01)

Patent

CA 1321479

ABSTRACT OF THE DISCLOSURE A method of replacing an old buried pipe with a new pipe comprises attaching a temporary pipe having an external diameter which is substantially the same as the new pipe to the rear end of a bursting mole having a cylindrical body whose external diameter is larger than the old pipe, impulsively moving the mole forward so that a head of the mole intrudes into the old pipe and bursts it to provide an enlarged space for receiving the temporary pipe following the mole, applying the new pipe to one end of the temporary pipe, and withdrawing the temporary pipe such that it is progressively replaced by the new pipe.

580574

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