High efficiency pumps with ECM-technology and permanent magnet rotor for applications like radiant heating (one- and two pipe systems), underfloor and surface heating, boiler feed, solar stations and similar applications; Efficiency ErP ready 2015; shaftless, maintenance-free spherical motor, magnetite resistant Anti-Block-Technology, switchable control options (step-less manually, automatic variable differential pressure and constant pressure),digital multi-display to show operating parameters, cataphoresis coated cast iron pump housing, LED operation indicator, plug.