An apparatus for metering and delivering painting products, characterized in that said apparatus comprises at least a delivery head comprising a plurality of basket assemblies, each holding a painting product and comprising a sliding metering valve, said basket assemblies being supported by a rotary supporting disc so as to be brought to an aligned relationship, one at a time, to a delivery point thereat a delivery unit designed for allowing the basket assembly contents to be delivered in a metered manner to a collecting vessel is provided, said collecting vessel being arranged on a balance coupled to a computer, controlling said delivery unit and basket assembly at said delivery point.