The invention relates to a jet regulator (1), comprising a jet regulator housing (2), within the interior of which a jet regulation device (4) is provided. According to the invention, such a jet regulator (1) can be produced at low cost, by means of simple conventional production techniques with simultaneous anti-scaling effect on the jet regulation device (4), whereby the jet regulation device (4) comprises several insertable components (9, 10), which may be inserted in series in the jet regulator housing (2) in the direction of flow (Pf1). Said insertable components (9, 10) comprise passage openings (11), which are unidirectionally defined and run across the cross-section of the passage and the passage openings (11) of adjacent insertable components (9, 10) are arranged offset to each other either in the circumferential direction of the jet regulator housing (2), or in the direction of flow (Pf1) of the jet regulator (1). |