BS EN ISO 4064-4:2014 pdf free

BS EN ISO 4064-4:2014 pdf free.Water meters for cold potable water and hot water
This part of ISO 4064 applies to water meters used to meter the volume of cold potable water and hot water flowing through a fully charged, closed conduit. These water meters incorporate devices which indicate the integrated volume.
This part of ISO 4064 specifies technical characteristics and pressure loss requirements for meters for cold potable water and hot water. It applies to water meters which can withstand:
a) a maximum admissible pressure (MAP) equal to at least 1 MPa1) [0,6 MPa for meters for use with pipe nominal diameters (DNs)≥500 mm];
b) a maximum admissible temperature (MAT) for cold potable water meters of30 °C;
c) a MAT for hot water meters of up to 180。C, depending on class.
In addition to meters based on mechanical principles, this part of ISO 4064 also applies to water meters based on electrical or electronic principles, and to water meters based on mechanical principles incorporating electronic devices, used to meter the volume flow of hot water and cold potable water. It also applies to electronic ancillary devices. As a rule ancillary devices are optional. However, national or international regulations may make some ancillary devices mandatory in relation to the utilization of the water meter.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads一Part 1: Dimensions, tolerances and designation
Meter size is characterized either by the thread size of the end connections or by the nominal size of the flange. For each meter size, there is a corresponding fixed set of overall dimensions. The dimensions of the meter, as illustrated in Figure 1, shall be in accordance with Table 1.BS EN ISO 4064-4 pdf downlaod.