Separator for water/solids in a robust, sound-insulated metal housing with suction and pressure connection for 38 mm and 50 mm hose systems. The AS 80 separator is suitable for drying insulation layer constructions with standing water in floating screeds, warm roof flat roofs, cavity floors, etc. both for smaller areas up to 40 m2 with one VD 40 unit and for larger areas up to 80 m2 where two VD 40 units are connected to the AS 80 separator. The check valves in the separator itself prevent the compressors from starting up incorrectly when two VD 40 units are used.