The Grundfos CME15-3 A-R-G-E-AQQE is a three phase horizontal multistage pump with integrated inverter. The Grundfos CM range are 'centrifugal modular' pumps designed to offer a vast number of configurations. The CM version is designed to be powered directly by mains power, whereas the CME has an integrated variable speed drive. Different material options are available with cast iron and two grades of stainless steel as options.