A flow control device adapted to be located in a vessel to control the level of a liquid therein is provided, comprising: a housing defining at least a primary chamber open towards a base portion to effect fluid communication in use with liquid in the said vessel and having a liquid supply aperture through an upper portion of the housing and a one way valve aperture letting into an upper portion of the chamber to allow the egress of air from the chamber but to restrict return flow a float located within the primary chamber such as to rise and fall therein in use at least between a higher or up position and a lower or down position having a through bore therein for flow of liquid a fluid conduit fluidly communicating between the liquid supply aperture and the through bore in the float so that the said liquid supply aperture, fluid conduit and through bore together constitute a fluid supply path within the chamber from outside and through the upper portion of the housing towards the base portion (and hence to the said vessel in use) wherein the fluid conduit comprises a flexible tube so configured as to describe an extended state with a substantially open through bore when the float is in the down position and to describe a kinked state with a substantially occluded through bore when the float is in the up position and wherein the housing includes a lower apertured portion providing fluid communication into the primary chamber, the lower apertured portion opening externally approximate with but extending above a base level of the housing.Dispositif de régulation découlement conçu pour se trouver dans une cuve pour réguler le niveau dun liquide qui y est contenu, comprenant : un logement délimitant au moins une chambre primaire ouverte vers une partie base afin deffectuer une communication fluidique, lors de lutilisation, avec le liquide contenu dans ladite cuve et possédant une ouverture dalimentation en liquide dans une partie supérieure du logement et une ouverture
