The R-VID™ is a proprietary Rosenberg vane type inlet device that is used to introduce gas/liquid mixtures into a vessel or column. The purpose of an R-VID™ is to decrease the momentum of the feed, perform a first stage separation of solids and liquid from the vapor, and achieve an even vapor distribution across the vessel cross section. This is obtained by splitting the feed mixture into a series of flat jets.In retrofitting situations, inlet nozzles are a common problem area. Higher gas flow volumes create poor gas distribution in crowded drums or distillation towers. This frequently results from under designed inlet distributors that allow localised high velocities and severe liquid re-entrainment.