The flow characteristics of a novel agitator, termed 'Narcissus' (NS), have been investigated by dye-tracer visualization and laser Doppler velocimetry; the experimental velocity data were also used to initiate and then validate the CFD simulation of the flow induced by the NS in a cylindrical stirred vessel, using a multiple reference-frame technique and in unstructured inner-volume mesh. This novel impeller is shown to have the characteristics of a radial agitator, with a double configuration: the flow loop structure in the vessel depends upon its normal or inverted insertion, with liquid either being drawn radially towards the NS or ejected outwards from it. This dual configuration, in conjunction with its very low power consumption, constitute interesting and important impeller features, especially for gas-liquid applications.