Abstract: A flow set for administering peritoneal dialysis solution in automated peritoneal dialysis which comprises interconnecting flow conduits for connecting respectively with (1) a patient's catheter, (2) a container for warming dialysis solution, (3) a drain line, and (4) a source of dialysis solution. The flow conduit (4) for connecting with the source of dialysis solution defines at least three branching conduits having connectors on their respective ends for communication with separate containers of dialysis solution. In accordance with this invention, means are provided for causing the flow path resistance through the conduit (4) of the respective flow paths passing through each of said branch conduits to be substantially equal.