A connector for the reciprocal connection of an end member of a water supply or of a sprayer with a flexible hose includes a tubular main body defining an axis and having a first end portion for coupling with the end member and a second end portion that includes an elongated spigot, on which an end of the flexible hose may be fitted, and further includes an abutment wall, from which the elongated spigot extends. The connector also includes a substantially tubular shaped ring nut placed peripherally to the spigot and reciprocally screwable with the main body, and an annular pressure element interposed coaxially between the ring nut and the spigot.