Abstract: A spray nozzle is provided for producing predetermined spray patterns of fan shaped configuration characterized in having an internal body configuration which is uniquely capable of effecting a very wide angled dispersion pattern of uniform density. The body of this spray nozzle is of disc shape having an outlet or a discharge end-face disposed transversely to a fluid flow axis through the body. An elongated, channel-shaped recess is formed in this discharge end portion and opens outwardly from the end face in transversely oriented relationship to the flow axis. A spray pattern control chamber is formed in the body along the flow axis thereof having an inlet at an end-face opposite the discharge end of the body and an outlet disposed interiorally of the body and in fluid communicating relationship with the channel-shaped recess. This spray pattern control chamber is formed with axially extending sidewall portions that are laterally spaced and are relatively convergent at the outlet end.