Flow control closure

A closure (10) of plastic for a container mouth, having means of flow regulation for selectively controlling the flow of contents dispensed from the container, the means of controlling traffic at least two parts (30, 70) comprising which can be moved relative to another, each part having at least one hole (39, 90) dispensing, being adapted parts (30, 70) so that their respective orifices (39, 90) may be aligned, the least partially with respect to one another and with the container mouth, defining the degree of overlap between the respective orifices a common area of ​​dispensation through which the flow is controlled, it characterized in that the parts are intended to move relatively through a plurality of stable positions for pre-selection of fixed incremental flow circulation.