Specifies materials, components and performance requirements for volumetric chamber and turbine meters with nominal flow rates not exceeding 40 kL/h and 250 kL/h, respectively, which may be fitted with an electronic output device (EOD). These meters are intended for installation in water services to measure, within the limits of accuracy of the Class, the volume of cold potable water at working temperatures not exceeding 30 degrees Celsius and working pressures of at least 1400 kPa.