The ChangeOver6 and NovoCon ChangeOver6 are 6-port motorized ball valves that perform a diverting function between two water circuits in a 4-pipe changeover system. This diverting function allows the cooling and heating capacity of a fan coil unit to be increased for the same compact size compared to a double coil model, where the heating and cooling water circuits each have their own coil. The ChangeOver6 and NovoCon ChangeOver6 are not suitable for flow control. Flow is modulated by the AB-QM pressure independent balancing control valve to avoid overflow and reduced efficiency of the boiler or chiller.Typical applications include radiant ceiling panels supplied by 4 pipes (heating supply and return, and cooling supply and return) and fan coil units with a single coil supplied by 4 pipes (heating supply and return, and cooling supply and return).