Patent ID: 7252247

Claim:
A spray nozzle comprising: a central tube with a central passage for supply of a liquid, the passage terminating in an orifice for discharge of the liquid, a second tube surrounding the central tube whereby a first passage is defined between the central tube and the second tube for supply of primary air, a nozzle cone positioned at the end of the second tube and defining the outer periphery of a first discharge gap of the first passage, causing air supplied through the first passage to be mixed with the liquid to provide a liquid/air spray, a third tube surrounding the second tube whereby a second passage is defined between the second and the third tube for supply of secondary air, and a jacket positioned at the end of the third tube and defining the outer periphery of a second discharge gap of the second passage, characterized in that the nozzle cone is adjustably positioned at the end of the second tube for adjustment of the size of the first discharge gap.