Abstract: A plurality of sanitary mixer fittings, in particular of concealed mixer fittings, form a set of mixer fittings that comprises identical universal connection housings with different cartridges and suitable different cartridges adapters. The universal housings have hot and cold water inlets for connection to the domestic water pipes as well as at least one mixed water outlet for connection e.g. to bath-tub inlets or showers. The relevant cartridge adapter is inserted into a location hole in the universal housings. The water inlets and outlets of the universal housings are flow-connected to water supply openings that are disposed in the inner surfaces of the adapter location hole in the universal housing. The water supply openings are flow-connected, optionally by annular chambers, to outer water supply openings in the outer surfaces of the relevant cartridge adapter. The relevant cartridge is inserted into a cartridge location hole in the relevant cartridge adapter.

Abstract: The shower base (1) of a shower head consists of a rigid perforated plate (1a), which has a number of holes (4, 5). Set into each of the holes (4, 5) in the perforated plate (1a) is a hose-type jet insert (6, 8) made of a flexible material which, owing to its material properties, can be flexed automatically to dislodge limescale deposits. The outer surface of the rigid perforated plate (1a), i.e. the surface of the shower base (1) which is visible to the user from underneath, is essentially completely covered by an impact resistant plate (1b) which is also made of a soft, flexible material. Of course the impact protection plate (1b) has collar-shaped lugs (12) going through it which are preformed on the perforated plate (1a) and which surround at least those hose-type jet inserts (8) which produce the high-power jets owing to their relatively narrow jet channel (9).