Abstract: A jet regulator (1) which can be inserted with its jet regulator housing (4) into the water outlet (2) of a sanitary outlet fitting (3) from a direction of the outlet end side and which, in the use position, is releasably fastened or fixed in the water outlet (2). The jet regulator is releasably latched in the water outlet (2). The latching device for fixing the jet regulator in the water outlet (2) is not visible from the outside and therefore also do not have an objectionable appearance.

Abstract: A jet regulator (1) which can be installed into the water outlet (2) of a sanitary outlet fitting (3), on the front side thereof. The jet regulator (1) can be arranged in a detachable or fixed manner in the water outlet (2). The jet regulator includes at least one holding element (4) for arranging or fixing the jet regulator (1) in the water outlet (2), with the holding element being inserted into a passage opening (5) on the perimeter of the fitting housing and engaging, in a fixed manner, with the end area thereof, the jet regulator (1), which projects into the interior of the fitting housing. The jet regulator (1) has a jet regulator housing (7) with an insertion opening (13) on the peripheral side, with the housing including in the interior at least one insertion guide (14) which is oriented across the jet regulator housing longitudinal axis, and at least one, preferably jet-producing, converter piece (15) can be inserted into the at least one insertion guide (14) from the insertion opening (13).