Abstract: The invention relates to a tap aerator (1) comprising a mounting housing and containing, in said mounting housing (2), an insert part that is designed as a jet divider and diffuser (7) which interacts with a diffuser ring (8). The annular retainer regions (7a) and (8a) of said diffuser (7) and diffuser ring (8), each arranged on the largest outer circumference, are located, when in a use position, in the interior of the mounting housing (2) at different height positions relative to one another in the axial direction, i.e. the retainer region (7a) of the diffuser (7) is not enclosed and the largest outer diameter of the diffuser ring (8) and its retainer region (8a) is only as large as, or if required even smaller than, the largest outer diameter of the diffuser (7) and its retainer region (7a). This allows the formation of an arrangement which saves space in the radial direction.

Abstract: The invention relates to a jet regulator (1) with a sleeve-shaped jet regulator housing (2), which (2) can be mounted on the water outlet of a plumbing outlet armature, and with a sealing ring (5) made of elastic material, which (5) seals in an axial direction against an adjoining annular flange at the water outlet of the outlet fixture. On the front inner peripheral area (6) of the jet regulator housing (2) on the inflow side, there is provided at least one housing undercut (7), which secures, on the jet regulator housing (2), the sealing ring (5), inserted into the housing interior (8) of the jet controller housing (2). In the jet controller (1) according to the invention, the sealing ring (5) is effectively secured against unintended loss, for example, during transport or storage.

Abstract: A sanitary functional unit with a housing releasably fastened to the water outlet of a sanitary outlet fitting, the housing having an outflow-side housing end face with outflow openings. The outflow-side housing end face has at least one slot, opposing longitudinal sides of which form turning engagement surfaces or tool engagement surfaces for a turning tool that is releasably inserted into the slot, and the housing of the functional unit is rotatably held on the water outlet of the outlet fitting and/or the housing end face is mounted rotatably in the housing. Using the turning tool in the slot, a pivotably mounted housing end face in the housing can be easily aligned and/or the turning force required for fitting and removing a screw connection provided between the outer housing periphery and the inner fitting periphery can be conveniently transferred to the housing without requiring special turning tools.

Abstract: The invention relates to a sanitary functional unit (2), which has a housing (6), which can be releasably fastened to the water outlet of a sanitary outlet fitting, the housing (6) having an outflow-side housing end face (9) with outflow openings (10). It is characterizing for the functional unit according to the invention that the outflow-side housing end face (9) has at least one slot (19), the opposing longitudinal sides (20) of which slot are designed as turning engagement surfaces or tool engagement surfaces for a turning tool that can be releasably inserted into the at least one slot (19) and is preferably formed as a coin (21), and that the housing (6) of the functional unit (2) is rotatably held on the water outlet of the outlet fitting and/or the housing end face is mounted rotatably in relation to the housing on said housing.

Abstract: A sanitary fixture (6) is provided having a mounting housing (9) which has a thread (10) for fastening to a mating thread provided on the water outlet of a sanitary outlet fitting. The mounting housing (9) has a downstream housing end side (12) with flow-through holes (13), and wherein at least one insertion part can be inserted into the mounting housing (9) as far as an insertion stop. According to one of the solution proposals described here, it is provided that the fixture (6) has an aerated jet regulator (16) or is configured as such, that the circumferential wall of the mounting housing (9) borders at least one aeration duct (14) at least in a subregion of at least double-walled configuration, and that the at least one aeration duct (14), which is open towards the downstream housing end side (12), opens out in at least one aeration opening (15) leading into the housing interior of the mounting housing.

Abstract: A sanitary fixture with a mounting housing which has a thread for fastening to a mating thread provided on the water outlet of a sanitary outlet fitting. The mounting housing has a downstream housing end side with flow-through holes, and wherein at least one insertion part can be inserted into the mounting housing as far as an insertion stop. The fixture has an aerated jet regulator or is configured as such, so a circumferential wall of the mounting housing borders at least one aeration duct at least in a subregion of at least a double-walled configuration, and the at least one aeration duct, which is open towards the downstream housing end side, opens out in at least one aeration opening leading into the housing interior of the mounting housing.