Abstract: The present invention relates to a quick joint coupling for liquid tight joining of lines under high pressure and comprising a sleeve shaped female part and a male part being introducible into the female part. A male part related to the female part comprises a cylindrical part being introducible into the female part of an envelope surface of which presents a first groove having a certain width. The first groove receives a ring being axially displaceable between the two walls of the groove, which the ring has substantially the same thickness as the depth of the first groove, and which the female part comprises a cylindrical space for receiving the cylindrical part of the male part. The envelope surface of the space is provided with at least a second groove for receiving elastically movable locking means out off and into the cylindrical part.

Abstract: A mounting stop at axially displaceable male-female couplings to prevent involuntary release of the coupling, whereby it comprises a recess (2) arranged to be placed in a first position around a shaft (32) and to be displaceable radially sidewise above said shaft (32) to a second position, and that it comprises at least one stop lug (6, 7; 9; 10) arranged, in said first position to be applied into a groove (34) and thereby to prevent an axial displacement of said male-female coupling parts towards each other, as well as a male part (32) present in such a coupling.

Abstract: A quick connect/disconnect coupling between a female connector and a male connector which is insertable into said female connector, e.g. for connecting a high pressure line to a valve block. The female connector (10) comprises a cylindric space (13) for the cylindrical part (14) of the male connector, the envelope surface of said space being provided with at least one groove (18) for accommodation of resiliently out of and into the cylindrical space movable blocking elements (20). A substantially annular flange (19) is coaxially provided at the outward side of the groove (18) of the female connector, substantially in line with the envelope surface of said space. The blocking means (20) comprise at least three in said groove (18) located metal arc segments, each being biased by an elastic element (21) into an inclined position relative to the symmetrical longitudinal axis of the female connector, said inclined position being the blocking position.