sanitary fittings, in particular thermostatic mixtures, with a housing (1),which has a valve seat (16) to accommodate a valve and which has at least one inlet channel (12, 13) and one outlet channel (14), with at least one inlet channel (12, 13) through a chamber (15), into which a return impeller (2) is inserted and which is closed by a stop (3), characterized by the fact that at the stop (3) there is a bracket mounted in the chamber (15) and by which the flow-back preventer (2) is axially fixed.
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