A sprinkling device for absorption towers comprising collectors for feeding sprinkling troughs of rectangular section with an acid and also constituting a support structure for the troughs. The collectors rest on a tower jacket by supports placed in cavities in the jacket. The sprinkling troughs contain sprinkling tubes and are fastened to the side walls of the collectors by flange joints. The outflow of liquid from the collectors to the individual sprinkling troughs is controlled by diaphragms situated where the liquid leaves the collectors and flows towards the troughs.
