Adjustable pipe union

Details Adjustable pipe union Adjustable pipe union

1980-03-03

1982-05-18

Callaghan, Thomas F.

Pipe joints or couplings

With indicator, alarm or inspection means

285302, 285341, 285355, 285356, F16L 1502

Patent

active

043301410

ABSTRACT:
An adjustable pipe union for tubing strings including an outer lower mandrel, an inner upper mandrel threaded along a lower end portion into the outer mandrel, packing between the mandrels, an annular seal chamber between the mandrels, a metal-to-metal seal assembly between the mandrels, and a jam nut threaded into an end portion of the outer mandrel around the inner mandrel against the metal-to-metal seal expanding the seal to lock the members together and seal between the members. A short embodiment of the union permits rotational orientation of tubing string apparatus such as valves. A longer embodiment of the union performs a spacing-out function for fitting a tubing string assembly between longitudinally spaced fixed members such as two packers.

REFERENCES:
patent: 255734 (1882-03-01), Moore
patent: 259449 (1882-06-01), Woodring et al.
patent: 2772100 (1956-11-01), Kreissig et al.
patent: 3166345 (1965-01-01), Pinkard
patent: 3711126 (1973-01-01), Hara et al.
patent: 4012060 (1977-03-01), Reneau

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