NWM PD-SDC-E4 is Piston Displacement (Volumetric) water meter with magnetic transmission, dry type register for residential application with sizes from Dn15 to Dn40 designed and manufactured by NWM and meets to the requirements of Directive 2004/22/EC on measuring instruments; the European Standard EN14154+A1+A2: Water Meter; the International Organization of Legal Metrology OIML R-49: 2006(E): Water meters intended for the metering of cold potable water