ISO 4064-4-2024 PDF

Full title and description

ISO 4064-4:2024 — Water meters for cold potable water and hot water — Part 4: Non‑metrological requirements not covered in ISO 4064-1. This part specifies non‑metrological technical characteristics, pressure‑loss requirements and related non‑metrological provisions for water meters and associated electronic ancillary devices used on fully charged closed conduits for cold potable and hot water measurement.

Abstract

This document applies to water meters that indicate integrated volume for cold potable water and hot water. It covers technical characteristics and pressure loss requirements for meters capable of withstanding specified maximum admissible pressures and temperatures (MAP and MAT) and applies to mechanical, electrical/electronic and hybrid meters as well as optional electronic ancillary devices. Examples of limits included are MAP ≥ 1 MPa (0.6 MPa for DN ≥ 500 mm), MAT for cold potable meters 30 °C and MAT for hot water meters up to 180 °C depending on class.

General information

• Status: Published.
• Publication date: December 2024 (listed 19 December 2024 in publication records).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 91.140.60 (Water supply systems; water meters).
• Edition / version: Edition 2 (ed.2.0, 2024).
• Number of pages: 28 pages.

Key bibliographic and lifecycle details above are taken from the ISO bibliographic entry for ISO 4064-4:2024 and allied publication listings.

Scope

ISO 4064-4:2024 specifies non‑metrological requirements for water meters used to meter volume of cold potable and hot water flowing through a fully charged, closed conduit. The standard applies to meters that incorporate devices indicating integrated volume and to electronic ancillary devices (normally optional). It sets technical characteristics and pressure‑loss requirements for meters with defined MAP and MAT values and is intended to be used alongside ISO 4064-1 (metrological and technical requirements) and the other parts of the ISO 4064 series.

Key topics and requirements

• Non‑metrological technical characteristics for water meters (materials, mechanical strength, sealing and marking requirements).
• Pressure‑loss requirements and limits to ensure acceptable hydraulic performance across operating ranges.
• Maximum admissible pressure (MAP) requirements (generally ≥ 1 MPa, with 0.6 MPa applying for very large diameters DN ≥ 500 mm).
• Maximum admissible temperature (MAT) classes — cold potable meters (MAT 30 °C) and hot water meters (up to 180 °C depending on class).
• Applicability to mechanical, electrical/electronic and hybrid meters and to optional electronic ancillary devices; requirements for interfaces between meter and ancillary devices.
• Requirements and recommendations intended to complement the metrological requirements in ISO 4064-1 and the test methods in ISO 4064-2/3.

These topics are drawn from the standard's stated scope and technical summary.

Typical use and users

Typical users include water meter manufacturers and designers, calibration and test laboratories, utilities and water suppliers, installation contractors, product certifiers and regulatory bodies responsible for water metering and billing. The part is used alongside the metrological parts of ISO 4064 when specifying, procuring, testing and installing water meters for potable and hot water services.

Related standards

ISO 4064 is a multipart series. Closely related parts include: ISO 4064-1:2024 (Part 1 — Metrological and technical requirements), ISO 4064-2:2024 (Part 2 — Test methods), ISO 4064-3:2024 (Part 3 — Test report format). Part 5 (installation conditions/requirements) is published separately and appears as the subsequent installment in the series. These parts are intended to be used together when specifying, testing and deploying water meters.

Keywords

water meter, potable water, hot water, MAP, MAT, pressure loss, ancillary devices, non‑metrological requirements, ISO 4064, metrology, meter installation, test methods.

FAQ

Q: What is this standard?

A: ISO 4064-4:2024 is Part 4 of the ISO 4064 series and defines non‑metrological requirements (technical characteristics, pressure‑loss requirements and related provisions) for water meters used for cold potable and hot water measurement.

Q: What does it cover?

A: It covers non‑metrological technical details that are not in ISO 4064-1:2024, including pressure‑loss limits, mechanical and thermal tolerances (MAP and MAT classes), applicability to mechanical and electronic meter technologies and guidance on ancillary electronic devices.

Q: Who typically uses it?

A: Manufacturers, testing/calibration laboratories, utilities and water authorities, procurement/specification teams and installation contractors use this part in conjunction with the other parts of ISO 4064 when specifying, testing, buying and installing water meters.

Q: Is it current or superseded?

A: ISO 4064-4:2024 is the current published edition (Edition 2, 2024), superseding the earlier 2014 edition; it is listed as published in December 2024.

Q: Is it part of a series?

A: Yes — it is one part of the multipart ISO 4064 series on water meters (Parts 1–5). Part 1 covers metrological and technical requirements, Part 2 test methods, Part 3 test report format, Part 4 the non‑metrological requirements (this document) and Part 5 addresses installation/installation conditions. These parts are used together for comprehensive specification and conformance.

Q: What are the key keywords?

A: Key keywords include: water meter, potable water, hot water, MAP, MAT, pressure loss, ancillary devices, ISO 4064, metrological requirements, test methods.