Nozzle having a connected coaxial arrangement for a paint spraying device

A paint spray coating assembly for supplying paint coating material to an atomizer for atomizing the coating material and depositing the atomized material upon the surface of an object, said assembly comprising;

• a nozzle (2) for connection to an atomizer, feed line means (12) for supplying the material flow axially from a supply system to said nozzle (2), and including return line means (10) for allowing the material to return to the supply system, mixing means (20) disposed within said feed line means (12) for homogeneously mixing at least two coating materials before the material flow enters said nozzle (2), said feed line means (12) including a tubular feed line (18) coaxially disposed within said return line means (10), a needle (16) disposed adjacent one end of said mixing means (20) and threadably secured to one end of said feed line (18), said needle having a central passageway (22) allowing the mixed material to enter from said feed line (18) and having at least one discharge bore (24) diverging outwardly and axially in the direction of material flow from said central passageway (22) to allow the mixed material to exit from said feed line (18) and said needle (16), said return line means (10) including a tubular return line (10) having a radial longitudinal collar (28) creating a flow resistance of the material returning to the supply system greater than the flow resistance of the material entering said nozzle (2).