The Brand, non-adjustable, proportional flow divider comes in three basic models B50, B100 and B100AB. The B series receives a single stream of fluid and divides it into two output streams. The ratio of division to the two outlets will remain constant even though the work being done by one of the streams is much greater than the work being done by the other. The ratio of the outlet flows, remains constant even when the input flow increases or decreases. The ratio of the outlet flows may be varied from equal flow (50:50) all the way up to a 95:5 ratio.