AEROSOL VALVE TO DISCHARGE PRODUCT INCLUDING POWDER AND/OR OTHER HARD PARTICLES FROM AEROSOL CAN Russian patent published in 2002 - IPC

FIELD: powder releasing devices. SUBSTANCE: valve has housing, gate with vertical valve rod and ring sealing seal for holes in rod. Valve rod has cylindrical surface above and below holes in rod. Valve gate has great number of narrow steps spaced on its periphery. Upper surfaces of steps have minimum area, as compared with grooves between upper parts of steps. Upper surfaces of steps thrust against gasket when valve is closed, and minimum areas of upper surfaces of steps prevent accumulation of powder affecting complete sealing of valve. Sealing surface of gasket surrounding valve rod is provided with lubricant, for instance, silicon one. Hole in rod is arranged over peripheral grooves between steps. EFFECT: provision of high quality and reliable operation owing to prevention of accumulation of powder in valve. 5 cl, 10 dwg