FIELD: pipes.
SUBSTANCE: invention relates to a pipeline system, in particular to a fitting for use with metal tubing. Fitting includes an adapter, having a longitudinal passage having a longitudinal axis for fluid flow; a body for receiving the tubing, the body positioned opposite the adapter and aligned with the longitudinal axis, a metal sealing member, positioned between the adapter and the body; a nut positioned opposite the body; a jacket lock ring, positioned radially inwardly of a portion of the nut. Jacket lock ring serves for making a mechanical connection with an outer jacket of the tubing; and at least one fastener coupling the nut, body and adapter.
EFFECT: invention improves coupling reliability.
16 cl, 4 dwg
