Abstract: An inlet horn for reducing liquid entrainment of liquid in vapor products in distillation towers. The inlet horn has a tangential entry for the vapor-liquid feed which opens into a peripheral open bottomed horn with a number of deflector vanes angularly disposed horizontally and vertically along the length of the horn to deflect liquid components of the feed radially outwards and vapor components downwards so as to improve their separation. The horn may be used in atmospheric and vacuum crude distillation and other vapor-liquid separation units.