ASCO Vacuum, with a focus on environmental sustainability and energy efficiency, is increasingly dedicated to implement a new series of monoblock liquid ring vacuum pumps powered by high-efficiency IE5 motors. The synchronous permanent magnet motors are integrated with VFD, which not only provide high energy efficiency to the drive unit but also allow the speed and performance of the pump to be adjusted according to the needs of the plant. The electronics on-board directly manage the pumps performance based on signals received from control instruments.