Abstract: An adsorber device for drying compressed gas comprises a first and a second chamber which operate alternately on drying and on regenerating the desiccant contained in the chambers. Regenerating is accomplished by branching-off a partial flow of dried gas at the outlet side of the chamber operating on drying and supplying the partial gas flow to the chamber working on regenerating. Means are provided for limiting the branched-off partial gas flow to the gas volume actually needed for regenerating. Embodiments are described wherein this gas limiting is accomplished with a constant partial gas flow prevailing between the two chambers and, further, embodiments are described wherein this partial gas flow is adjusted in accordance with the main gas flow through the chamber working on drying.