FIELD: construction.
SUBSTANCE: device comprises connecting sleeve provided with the recess and clamping nut having the first thread. The connecting sleeve is provided with appropriate thread and cut in ring mounted for permitting compression between the wedge-shaped section of the recess wall and piping member when the clamping nut is tightened. The piping joint has auxiliary nut with thread whose direction of screwing corresponds to the direction of the first thread. The clamping nut has the second thread appropriate to the thread of the auxiliary nut.
EFFECT: enhanced reliability.
23 cl, 4 dwg
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