Abstract: A process for opening the valves of valved bags and for inserting the opened bags on spigots to fill the bags with bulk material, comprises the following steps: consecutively advancing the bags in a substantially horizontal plane towards the spigots, while the bag valve is oriented in the advancing direction of the bags and guiding each bag by a free edge of the bag top; pivoting, during the advancing step, the top of each bag about a top fold line from a horizontal orientation, in which it is substantially coplanar with the bag body, into a predetermined inclined position; pivoting, subsequent to the preceding pivoting step, that half of the bag top which is oriented towards the bag body, about the top fold line, into a predetermined inclined position with respect to the bag body, whereby the bag top assumes an inverted V configuration; pivoting, subsequent to the preceding pivoting step, the bag body downwardly into a vertical orientation; raising, subsequent to the preceding pivoting step, at least the val