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ISO 4064-4:2024

Water meters for cold potable water and hot water — Part 4: Non-metrological requirements not covered in ISO 4064-1

Edition date: 2024-12-19
In Force
Available languages: French, English
Summary:

This document 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 document 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 of 30 °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 document 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.

1) 1 MPa = 10 bar (1 bar = 0,1 MPa =105 Pa; 1 MPa = 1 N/mm2).



Le présent document s’applique aux compteurs d’eau utilisés pour mesurer le volume d’eau potable froide et d’eau chaude s’écoulant dans une conduite fermée et à pleine charge. Ces compteurs d’eau comportent des dispositifs indiquant le volume compté.

Le présent document spécifie les paramètres techniques et les exigences de perte de pression s’appliquant aux compteurs d’eau potable froide et d’eau chaude. Il s’applique aux compteurs d’eau pouvant résister à:

a)       une pression maximale admissible (PMA) égale à au moins 1 MPa1) [0,6 MPa pour les compteurs équipant des conduites de diamètre nominal (DN) ≥ 500 mm];

b)       à une température maximale admissible (TMA) allant de 30 °C, pour les compteurs d’eau potable froide;

c)        jusqu’à 180 °C pour les compteurs d’eau chaude, selon la classe.

En plus des compteurs dont le fonctionnement est basé sur des principes mécaniques, le présent document s’applique aussi aux compteurs d’eau dont le fonctionnement est basé sur un principe électrique ou électronique, ainsi qu’aux compteurs d’eau à fonctionnement mécanique incluant des dispositifs électroniques utilisés pour mesurer le volume débité d’eau chaude et d’eau potable froide. Il s’applique également aux dispositifs électroniques complémentaires. Généralement, les dispositifs complémentaires sont facultatifs. Cependant, des réglementations nationales ou internationales peuvent rendre certains dispositifs complémentaires obligatoires selon l’utilisation du compteur d’eau.

1) 1 MPa = 10 10 bar (1 bar = 0,1 MPa =105 Pa; 1 MPa = 1 N/mm2).
ICS: 91.140.60-Water supply systems
CTN: ISO/TC 30/SC 7 - 47620

Standards Cancellations

Anula a ISO 4064-4:2014

International Equivalence

Identic UNE-EN ISO 4064-4:2025

Normas Conjuntas

Trabajo conjunto ISO 12131-3:2020

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