Abstract: A connector assembly for fluid conduits comprises a first fitting including a connector to one of the conduits, a second fitting to which the first fitting is attachable and which includes a connector to the other of the conduits, and a swivel member within the second fitting swivable either to an open position establishing communication between the two connectors, or to a closed position blocking communication between the two connectors. The two fittings include interlocking elements which permit the first fitting to be attached to and detached from the second fitting only when the swivel member is in its closed position.