A method for feeding in and transporting material in a pneumatic conveying system includes at least one input point, a material conveying pipe, and a material container. A partial-vacuum source produces a partial vacuum/a pressure difference and a transporting air current in the conveying pipe. A shut-off element, arranged on an opposite side of an input aperture with respect to a feeder channel, is movable by suction from a first position, in which the shut-off element does not make a pathway through an input aperture into the feeder channel smaller, into a second position, in which the shut-off element does make the pathway through the input aperture into the feeder channel smaller, when the pressure on a first side, on the feeder channel side, of the shut-off element is smaller than on a second side, on an opposite side with respect to the feeder channel, of the shut-off element.