Electric and electronic machines, namely rotary pumps; industrial devices, namely rotary mechanical mixing machines for fluids, magnetic bearings as machine parts, magnetic levitation bearings as machine parts, machine parts in the nature of non-rotating bearings not in contact with the rotating machine parts supported by the bearings; rotary pumps, valves for pumps, and connecting pipes all sold as a unit for mixing two or more fluids at variable, selectable fluid mixing ratios