US Patent 7243861 Spray nozzle

A spray nozzle (11) includes a body (12) defining an axial cavity and having, housed in the cavity, from upstream to downstream in the liquid direction of flow X-X′, a calibrating nozzle tip (33), a piece called divergent (19) and a piece called convergent (16). More particularly, the calibrating nozzle tip (33) and the convergent (16) are respectively integral with a plug (21) and the nozzle body (12), the plug being hermetically threaded into the cavity of the nozzle body (12) and including at least one gripping zone (22), while the divergent (19) is an independent piece immobilized in the cavity of the nozzle body (12).