Self-closing dispensing valve (1; 501; 601; 701) made of an elastic material comprising a valve head (2; 502; 602; 702) with a dispensing orifice, a circular peripheral retaining flange (3; 503; 603; 703) spaced apart from the valve head (2; 502; 602; 702) in an axial direction, and a connecting sleeve (4; 504; 604; 704) integrally connected with the valve head (2; 502; 602; 702) on one end and the retaining flange (3; 503; 603; 703) on another end, wherein the dispensing orifice is formed by at least three slits (11, 12, 13, 14) in the valve head (2; 502; 602; 702), wherein said slits (11, 12, 13, 14) converge at a centre (10; 710) of the valve head (2; 502; 602; 702) and are angularly evenly distributed around the centre (10; 710) of the valve head (2; 502; 602; 702), wherein the valve head (2; 502; 602; 702) comprises a number of lobes (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723), wherein in each of said lobes (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723) at least one of said slits (11, 12, 13, 14; 511, 512, 513, 514, 515; 611, 612, 613; 711, 712, 713) is formed, wherein each of the lobes (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723) has a tip region (21a, 22a, 23a, 24a; 721a, 722a, 723a) on a radial outer end of the lobe (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723), wherein the tip regions (21a, 22a, 23a, 24a; 721a, 722a, 723a) of the respective lobes (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723) lie approximately on an imaginary circle, and wherein consecutive tip regions (21a, 22a, 23a, 24a; 721a, 722a, 723a) are interconnected by an indentation (25, 26, 27, 28; 725, 726, 727) formed in the peripheral contour (29; 729) of the valve head (2; 502; 602; 702) relative to a circle shape, and wherein the connector sleeve (4; 504; 604; 704) has a shape defined by contour lines, wherein said contour lines in the axial direction from the valve head (2; 502; 602; 702) to the retaining flange (3; 503; 603; 703) make a gradual transition of the lobed shape of the outer contour of the valve head (2; 502; 602; 702) to the circular inner contour of the retaining flange (3; 503; 603; 703), characterized in that the valve head (2; 502; 602; 702) has a concave exterior surface. wherein the dispensing orifice is formed by at least three slits (11, 12, 13, 14) in the valve head (2; 502; 602; 702), wherein said slits (11, 12, 13, 14) converge at a centre (10; 710) of the valve head (2; 502; 602; 702) and are angularly evenly distributed around the centre (10; 710) of the valve head (2; 502; 602; 702), wherein the valve head (2; 502; 602; 702) comprises a number of lobes (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723), wherein in each of said lobes (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723) at least one of said slits (11, 12, 13, 14; 511, 512, 513, 514, 515; 611, 612, 613; 711, 712, 713) is formed, wherein each of the lobes (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723) has a tip region (21a, 22a, 23a, 24a; 721a, 722a, 723a) on a radial outer end of the lobe (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723), wherein the tip regions (21a, 22a, 23a, 24a; 721a, 722a, 723a) of the respective lobes (21, 22, 23, 24; 521, 522, 523, 524, 525; 621, 622, 623; 721, 722, 723) lie approximately on an imaginary circle, and wherein consecutive tip regions (21a, 22a, 23a, 24a; 721a, 722a, 723a) are interconnected by an indentation (25, 26, 27, 28; 725, 726, 727) formed in the peripheral contour (29; 729) of the valve head (2; 502; 602; 702) relative to a circle shape, and wherein the connector sleeve (4; 504; 604; 704) has a shape defined by contour lines, wherein said contour lines in the axial direction from the valve head (2; 502; 602; 702) to the retaining flange (3; 503; 603; 703) make a gradual transition of the lobed shape of the outer contour of the valve head (2; 502; 602; 702) to the circular inner contour of the retaining flange (3; 503; 603; 703), characterized in that the valve head (2; 502; 602; 702) has a concave exterior surface.