Abstract: A reversible adapter designed to be disposed between the bottom of a standard mixer tap cartridge and the bottom of a standard mixer tap body chamber, said bottoms conforming to a substantially circular common design, with two inlet locations disposed symmetrically about a diameter, includes:a rigid part (10) having a transverse surface (11) flanked by a skirt (12) and including two inlet locations, two half-moon shape openings (17, 18) respectively radially inside and radially outside a half-circle,one of two elastic material seals, the first of which includes two angularly offset chambers respectively surrounding the inlet locations and the second (40) of which includes two concentric circumferential chambers disposed on radially opposite sides of this semicircle, and each of which includes, at its end axially aligned with one of the half-moons, a web (40F, 40G) defining, facing that half-moon, a cup the depth of which increases in the direction towards the other end.

Abstract: A mixer tap cartridge including a body (10) having a bush (23) with a reference axis, internal flowrate adjustment members disposed inside the body and a lever (20) cooperating with these internal members to adjust the flowrate hinged to the bush (23) about a transverse pin (24) and having an exterior part (21) projecting out of the body, the lever and the bush having complementary bearing surfaces (25, 26) conjointly defining an extreme flowrate configuration of the lever, characterised in that the bearing surface (25) of the lever is part of a projecting portion of a pin (27) sliding in a transverse hole (28) in the lever, this pin cooperating with an adjustment member (31) mobile in a housing (30) in the lever accessible from outside the cartridge.