Abstract: A mixing tap comprising a tap body with hot and cold water inlets and an outlet all leading into embossments in a hollow spherical configuration on which a spherical control member is swivelably mounted. The control member has an inner mixing chamber with two peripheral openings which selectively cooperate with the liquid inlet ducts to adjust the hot/cold water mixture according to the inclination of the handle, and a third opening which leads to the outlet duct, a flow-setting valve in the mixing chamber being controlled by screwing the handle. Flexible annular lips integral with the embossments about the inlet ducts, and a flexible tongue fitted around an opening in the tap body through which the handle passes, are pressed by the liquid pressure against the control member to provide fluid-tightness.