in an apparatus for wetting a glass pane , in particular a glass pane of a motor vehicle , a spherical body which supports a nozzle body is inserted into an accommodation space which is formed in a bearing head of an insert body . the accommodation space exhibits the spherical body together with resistance projections which fix an annular shoulder and also serve to fluidically stabilize a liquid fluid , which flows into a flow expansion space as a subregion of the accommodation space , in the form of , for example , wash water . an oscillating fan - like stream can be reliably generated as a result .