Abstract: In the case of a jet regulator, it is thus provided to effect in the outlet structure (14) a division into a core region (17) and a ring region (18) enclosing this core region (17), wherein the core region (17) determines the emerging jet (21) into a core jet (23), while the ring region (18) defines an outside of the jet (21), and outwardly extending separating elements (19, 20) in the ring region (18) are dimensioned such that the jet (21) is divided on the outside into jet arms (22).

Abstract: A water outlet (1) or a line coupling, which has an inflow-proximal first coupling or outlet part (2) and an outflow-proximal second coupling or outlet part (3), which (2, 3) are movable between a releasing position and a use position, in which use position the coupling or outlet parts (2, 3) in each case configured so as to be sleeve-shaped are connected to one another in the flow direction and are releasably fixed to one another by a threadless quick-release coupling (4). The water outlet (1) or the line coupling, which can serve as a sanitary water outlet (1) or a sanitary line coupling, is distinguished by simple and rapid assembling and disassembling of the coupling or outlet parts (2, 3).