An air halo nozzle assembly for a spray gun assembly, the spray gun assembly including a fluid supply assembly and an air supply assembly, said air halo nozzle assembly comprises a liquid nozzle assembly, wherein: said liquid nozzle assembly includes a body and a valve assembly; said liquid nozzle assembly body defines a passage and a liquid outlet, said liquid nozzle assembly body passage being in fluid communication with said nozzle assembly body liquid outlet; said liquid nozzle assembly body passage being structured to be coupled to, and in fluid communication with, said fluid supply assembly; said liquid nozzle assembly being structured to produce a liquid flow stream from said liquid nozzle assembly body liquid outlet having a longitudinal axis; the valve assembly including a valve member that with a valve seat forms a liquid valve, wherein the valve member is moveable from an open position, in which the valve member is spaced from the valve seat to a closed position, in which the valve member engages the valve seat to cease the liquid flow stream; wherein the air halo nozzle assembly includes an air halo assembly including a body; said air halo assembly body defines a passage between a hyperbolic outer surface of the liquid nozzle assembly body and a tapered inner surface of the air halo assembly body; said air halo assembly body passage includes an inlet and an air halo outlet said air halo outlet being disposed about said nozzle assembly body liquid outlet; said inlet being structured to be in fluid communication with said air supply assembly; and wherein said air halo outlet is configured to create a defined, elongated gas flow that extends about and immediately adjacent said liquid flow stream such that said elongated gas flow is disposed about said liquid flow stream. said liquid nozzle assembly includes a body and a valve assembly; said liquid nozzle assembly body defines a passage and a liquid outlet, said liquid nozzle assembly body passage being in fluid communication with said nozzle assembly body liquid outlet; said liquid nozzle assembly body passage being structured to be coupled to, and in fluid communication with, said fluid supply assembly; said liquid nozzle assembly being structured to produce a liquid flow stream from said liquid nozzle assembly body liquid outlet having a longitudinal axis; the valve assembly including a valve member that with a valve seat forms a liquid valve, wherein the valve member is moveable from an open position, in which the valve member is spaced from the valve seat to a closed position, in which the valve member engages the valve seat to cease the liquid flow stream; wherein the air halo nozzle assembly includes an air halo assembly including a body; said air halo assembly body defines a passage between a hyperbolic outer surface of the liquid nozzle assembly body and a tapered inner surface of the air halo assembly body; said air halo assembly body passage includes an inlet and an air halo outlet said air halo outlet being disposed about said nozzle assembly body liquid outlet; said inlet being structured to be in fluid communication with said air supply assembly; and wherein said air halo outlet is configured to create a defined, elongated gas flow that extends about and immediately adjacent said liquid flow stream such that said elongated gas flow is disposed about said liquid flow stream.