Foul air evacuating device from toilet bowl comprises extraction means and non-return valve preventing odors rising to tank

摘要

The device for extracting foul air contained in a toilet bowl (1) comprises extracting means (13) for at least 15m3>/h extraction and a non-return valve (6) preventing odors from the evacuation channel (8) rising to the tank (9). The extraction means is associated with an element (11) ensuring the ratio of air volume extracted through the distribution channel (2bis)/ extracted air not passing through the distribution channel ranges between 0.1 and 5.