Water pump having a spherical ball coupling

A swimming pool water pump having connection couplings for connection to fluid flow piping for the purpose of circulating a fluid, preferably for a swimming pool or for a swimming bath, at the fluid suction orifice of the pump and/or at the fluid delivery orifice of the pump, said pump having at least one said connection coupling integrated into the pump at said delivery orifice or at said suction orifice, said coupling having a spherical ball ending in a cylindrical tubular end-piece suitable for inter-fitting with the end of a said fluid flow pipe, wherein the axis of said cylindrical end-piece is inclined relative to the axis of said spherical ball, so that the axis of said cylindrical end-piece can pivot in all of the rotation directions relative to the axis of said delivery orifice or of said suction orifice of the pump, and presents an inclination relative to the axis of said orifice of the pump, by an angle α that, in absolute terms, is less than or equal to αmax, where αmax lies in the range 25° to 60°, and preferably in the range 30° to 45°.