Coupling device for fluid lines

A coupling device for coupling a first fluid line to a second fluid line, said device comprising:

• (a) a female part comprising:
• (i) a line end for sealably connecting to the first fluid line;
• and
• (ii) a female mating end comprising a cylindrical annular wall with an aperture;
• (iii) at least one locking arm comprising a cam, said arm rotatably connected to the female mating end and rotatable between a locked position wherein the cam protrudes through the aperture to a locked position, and an unlocked position wherein the cam protrudes through the aperture to an unlocked position;
• (b) a male part comprising:
• (i) a line end for sealably connecting to the second fluid line;
• and
• (ii) a male mating end comprising a cylindrical annular wall, comprising an outside surface with a circumferentially formed groove and defining a longitudinally formed channel extending from the end of the male mating end into the groove, the groove intersecting the channel;
• (iii) a safety stop formed in the intersection of the channel and the groove;
• wherein the at least one locking arm cannot be rotated to the locked position when the cam is aligned with the safety stop, and the cam in either the locked or unlocked position engages the male cylindrical annular wall within the groove to retain the male mating end in the female mating end, unless the male part is rotationally positioned relative to the female part such that cam is aligned with the channel, in which case the male part is releasable from the female part.