Calpeda pumps are energy saving variable speed circulating pumps driven by a permanent magnet synchronous motor (pm) controlled by a board inverter. Featuring a Bronze pump casing. Meeting European Directive 2005/32/EC these ecodesign pumps meet stringent requirements for energy efficiency. Calpeda Brochure Downloads ->  Calpeda NCE PS - 25-60 180 Bronze , NCS 3 - 20-40 130 Bronze,  NC 3