An electrostatic spray nozzle assembly comprising: an input head made of non-electrically conductive material, an elongated hollow nozzle body supported by said input head made of non-electrically conductive material, said input head having a liquid inlet for coupling to a liquid supply, an electrode supported within said input head for connection to a high voltage electrical source, said electrode having a liquid passage communicating with said liquid inlet, an elongated feed tube made of electrically conductive material disposed within said elongated nozzle body having a feed tube liquid passage communicating with said liquid passage of said electrode, said feed tube and elongated nozzle body defining an air flow passage having a pressurized air inlet for coupling to a pressurized air source, a spray tip made of electrically conductive material at a downstream end of said nozzle body having a spray tip liquid passage in communication with said feed tube liquid passage and a discharge orifice for discharging liquid from the spray nozzle assembly, an air cap secured to a downstream end of said elongated nozzle body for securing and retaining said spray tip, liquid feed tube, and electrode in electrically conducting relation to each other such that upon coupling of said electrode to an high voltage electrical supply source, liquid passing through said liquid passages of said electrode, feed tube, and spray tip is electrically charged for discharge form said spray tip in a pattern of electrostatically charged liquid particles, and said air cap defining an air flow passage section (71 a) about said spray tip in communication with said air flow passage defined by said feed tube and nozzle body and having an air discharge orifice from which pressurized air is directed about said pattern of electrostatically charged liquid particles discharging from said spray tip. an input head made of non-electrically conductive material, an elongated hollow nozzle body supported by said input head made of non-electrically conductive material, said input head having a liquid inlet for coupling to a liquid supply, an electrode supported within said input head for connection to a high voltage electrical source, said electrode having a liquid passage communicating with said liquid inlet, an elongated feed tube made of electrically conductive material disposed within said elongated nozzle body having a feed tube liquid passage communicating with said liquid passage of said electrode, said feed tube and elongated nozzle body defining an air flow passage having a pressurized air inlet for coupling to a pressurized air source, a spray tip made of electrically conductive material at a downstream end of said nozzle body having a spray tip liquid passage in communication with said feed tube liquid passage and a discharge orifice for discharging liquid from the spray nozzle assembly, an air cap secured to a downstream end of said elongated nozzle body for securing and retaining said spray tip, liquid feed tube, and electrode in electrically conducting relation to each other such that upon coupling of said electrode to an high voltage electrical supply source, liquid passing through said liquid passages of said electrode, feed tube, and spray tip is electrically charged for discharge form said spray tip in a pattern of electrostatically charged liquid particles, and said air cap defining an air flow passage section (71 a) about said spray tip in communication with said air flow passage defined by said feed tube and nozzle body and having an air discharge orifice from which pressurized air is directed about said pattern of electrostatically charged liquid particles discharging from said spray tip.