The MDTC range features a feed hopper with a cylindrical/conical compression zone. Conveying media with a low degree of intrinsic flowability or with none at all are fed to the conveying elements rotor and stator through the auger feed screw on the coupling rod. Optimum filling of the conveying chamber is achieved through the priming pressure generated in the compression zone. The pumps of the MDTC range are equipped with open joints of the MDC range and comply with the regulations of the 3A-Sanitary Standards of the USA.