The present invention relates to a flow divider promoting separation, the flow divider comprising an inlet, at least one dividing fin, and two or more outlets. According to the present invention a pipeline leading to the inlet is sufficiently long to promote at least a degree of separation of a fluid that is carried through the pipeline and that initially is mixed, the lighter constituents flowing through a top section of the pipeline, and the heavier constituents flowing through a bottom section of the pipeline, wherein the at least one dividing fin is/are arranged either vertically and/or horizontally in order to divide the flow into two or more smaller flow streams downstream of the flow divider.