HOPPERS are equipped with 200 mm diameter SCREW that rotates at low speed. This combination allows the grapes to be treated with extreme delicacy, WITHOUT CRUSHING. The hoppers are equipped with MECHANICAL SPEED VARIATOR to optimize the rotation speed of the SCREW in the various situations. Start and stop of the hoppers are managed directly from the pump control panel. The SCREW is EASILY EXTRACTABLE for fast and accurate cleaning.