Abstract: A flow distributor for distributing liquid onto a packed bed of a process column. The distributor includes an elongated liquid trough having first and second laterally spaced, longitudinally extending sidewalls and a longitudinally extending floor which extends between and interconnects the sidewalls. The sidewalls each have a plurality of holes therethrough, which holes are spaced apart longitudinally of said distributor. The distributor also includes a respective elongated liquid distributor drain pipe for each of said holes. Each pipe has first and second ends and a central internal liquid conducting passageway extending therethrough between its ends. Each pipe also has a first segment adjacent its first end and a second segment spaced longitudinally of the pipe from the first end. The segments are angularly disposed relative to one another.