Abstract: An airless spray nozzle which is capable of spraying paint of high viscosity as well as that of low viscosity while effectively preventing generation of tailing. A pair of stops formed between a substantially hemi-spherical depression of a front nozzle section and a through-hole of a rear nozzle section, a pair of main slants formed on the inner surface of the rear nozzle section defining the through-hole, a pair of first auxiliary slants and a pair of the second auxiliary slants each successively formed on the inner surface of the front nozzle section defining the depression cooperate to one another to positively spray paint of increased viscosity under a relatively low pressure without generating any tailing.

Abstract: A fan-spray nozzle capable of preventing generation of tailing and improving spraying of paint, as well as being readily manufactured. In the nozzle, a through-hole of a cylindrical section is formed so as to have a cross-sectional area larger than that of a hemispherical depression formed in a dome section and at a front end thereof into a substantially elliptical or oval shape in cross section. The oval-shape has a minor axis portion formed so as to have a length equal to the diameter of the depression so that the through-hole may be smoothly connected to the hemispherical depression at the minor axis portion.