A sanitary installation element (1) having at least one bypass or cleaning duct (6) which is assigned a valve in whose open position the at least one bypass or cleaning duct is connected switched on. The installation element (1) according to the invention is characterized in that the installation element (1) has a filter screen (4) with at least one outlet opening (5), which outlet opening (5) has a larger clear opening cross section than the screen openings of the filter screen (4), that the at least one outlet opening (5) opens into the at least one bypass or cleaning duct (6), and that, as seen in the direction of flow, the outlet opening (5) is arranged in front of at least one liquid-conveying component of at least one functional unit situated in the installation element (1) and, as seen in the direction of flow, the duct outlet of the at least one bypass or cleaning duct (6) is arranged after this component.