Torque reducing coupling for face seal fittings

Details Torque reducing coupling for face seal fittings Torque reducing coupling for face seal fittings

1990-08-10

1992-07-14

Arola, Dave W.

Pipe joints or couplings

Particular interface

285353, 285415, 285923, 277207A, 277 1, F16L 2500

Patent

active

051296888

ABSTRACT:
In a face seal fitting between two conduits, one conduit is provided with an annular groove in which a two-piece ring makes a sliding fit. The ring is coated with a diamond low friction coating which facilitates sliding of the ring in the groove. The ring assembly performs the function of a flange and is engaged by a threaded coupling nut. As the coupling nut is turned to engage a second coupling nut and draw the conduits together, the nut also engages the two-piece ring which slides in the groove thereby reducing torque.

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Feder, "Industry's Growing Romance With Diamonds", The New York Times, Feb. 21, 1990, p. C5.

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