A component for de-spinning a flow of dry vapour or gas and for separating liquid from vapour or gas, said component including concentrically, in inverse order, an outer vertical tube for admission of the vapour or gas and liquid mixture to be separated and travelling in a downward spinning flow, a coaxial inner tube for collecting dry vapour or gas, and an inner sleeve, said inner and outer tubes being cylindrical of circular cross-section, means positioned between the inner tube and said inner sleeve for de-spinning the flow of said dry vapour or gas, the lower edge of the outer tube being separate from the inner tube and at a level lower than that of the upper edge, and said lower edge of said outer tube being provided with upwardly extending orifices circumferentially spaced on its periphery, whose width decreases upwards.