Abstract: A fitting interposed in a pair of fluid-conduits which lead together from one facility to another. The fitting has one unit with a center portion affording direct and confined passage between sections of one conduit; and such unit also receives one section of the other conduit. A second unit is rotatable in the first one with inner ends of both units formed with facing annular channels; and the second unit communicates with the other section of the second conduit. Thus, an impulse to rotate the second unit will maintain continuity betwen the sections of the second conduit through the universal communication between the facing channels; and the application of the second conduit may be duplicated in rotary sequence by additional conduits.