Centrifugal single pumps, single-stage with stainless steel impeller directly coupled to the permanent magnet drive motor, wet rotor type, with dividing insert of non-magnetic alloyed steel. In-line flanged bores with counter flanges, suitable for the circulation of hot and cold water and water/glycol mixtures into heating plants. Permanent magnets drive motor. The CPD-A is controlled by an enctronic self-regulating motor with permanent magnets drives it. These magnet create a rotational magnetic field where 60% less electrical energy issued for the same amount of work. The CPD-A pump optimally adapts to the hydraulic requirements of a system without a frequency converter, saves energy compared to the other pumps of same size. An LCD screen with menu control males the pump user-friendly and enables remote control via HTTP or FTP.