A method is provided for feeding in and transporting material in a pneumatic conveying system for material, which conveying system includes at least one input point of material, a material conveying pipe, which can be connected to the input point, and a material container, in which the material being transported is separated from the transporting air, and also a device configured to product a partial vacuum/a pressure difference and/or a transporting air current in the conveying pipe at least during the transporting of the material, which device includes at least one partial-vacuum source. In the method, the suction side of the partial-vacuum source is connected to act in the conveying pipe and onwards to an input point arranged in the conveying pipe, or to act at least in the feeder channel that is between the conveying pipe and the input point, in which case the input point, or at least the feeder channel, intended for emptying that is closest to the material container in the conveying direction of the mate
