Abstract: An adjustable flow rate nozzle for atomizing liquids comprises a tubular-like body for conducting a liquid under pressure having a discharge end terminating in a single plane surface, a structured device having a single plane surface which is attached with its plane surface contiguous with the plane surface of the tubular-like conduit and a slit-like aperature formed between the single plane surfaces of the tubular-like conduit and the structured device. The size of the slit-like aperture and thus the atomized flow rate is adjustable by securing structured devices to cooperate with the discharge end of the tubular-like body. The tubular body contains a main feed cavity of relatively large circular cross section and at least one corona cavity which is elongated outwardly from the main feed cavity. The corona cavity includes a pair of spaced sidewalls extending outwardly from the main feed cavity and an arcuate end wall joining the spaced side walls remote from the main feed cavity.