A device for transferring pulverulent material, for example, powdery material, including an enclosure wherein the pulverulent material to be transferred is stirred and pressurized; a first pipe and a second pipe which transport the material towards its destination; and a gas intake for introducing gas to the second pipe. The drive shaft has an internal concentric shaft which enables the adjustment of the pitch of the propeller blades P by mounting the propeller blades P for rotation about a pitch axis and coupling the mounting via an integral bevel gear to a bevel gear on the shaft. In some embodiments, the device comprises an adjustable tension element disposed on either the first interface or second interface to adjustably control the tension between the first interface and second interface, and to adjustably control the compression between the first and second portions of the splitboard when coupled.