Abstract: A compression unit including at least one volumetric compressor for compressing the air drawn from the external environment, a system for drying the compressed air operatively associated to the at least one volumetric compressor, one tank for storing the compressed air delivered from the at least one volumetric compressor, wherein the drying system comprises a unit for cooling the compressed air positioned downstream of and placed in fluid communication with the tank, and one dryer positioned upstream and placed in communication with the cooling unit, the dryer configured to reduce the moisture content present in the compressed air that can be dispensed by the compression unit, one solenoid valve positioned upstream of the dryer, to shut off the flow of compressed air flowing out from the tank, and a differential pressure switch to control the switching of the solenoid valve.

Abstract: A compression unit, for a volumetric compressor, includes at least one cylinder, at least one piston, a drive shaft, operable in rotation around a rotation axis and associated with the at least one piston through a connecting rod/crankshaft kinematic mechanism, a casing for supporting the at least one cylinder and for housing at least one portion of the drive shaft and of the connecting rod/crankshaft kinematic mechanism, and which includes at least one air intake in communication with the outside of the compression unit and defining at least one passage for the air to be drawn therein and to be supplied to the at least one cylinder; the air intake is in fluid communication with the interior of the at least one cylinder through a path which is extended inside the casing and through at least one section of a wall of the at least one cylinder.