ISO 4064-5-2014 PDF

Full title and description

Water meters for cold potable water and hot water — Part 5: Installation requirements. This part of ISO 4064 gives guidance and requirements for selecting, fitting, installing and putting into service water meters used in fully charged, closed conduits so that they provide accurate, reliable measurement and remain maintainable and safe in service.

Abstract

ISO 4064-5:2014 specifies installation-related criteria for single, combination and concentric water meters for cold potable and hot water. It covers selection criteria (pressure, temperature, water quality, flow rates), recommended associated fittings, accessibility and mounting, protection against environmental and hydraulic hazards, earthing/shunting where applicable, requirements for groups and parallel operation, and first-operation (commissioning) procedures. The part applies irrespective of measurement technology (mechanical, electrical/electronic or hybrid) and includes optional electronic ancillary devices.

General information

• Status: Withdrawn (superseded).
• Publication date: June 2014 (Edition 1).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 91.140.60 (Water supply systems — Water meters).
• Edition / version: Edition 1 (2014).
• Number of pages: 12.

Scope

Applies to water meters that measure the volume of cold potable water and hot water in fully charged, closed conduits and that incorporate devices indicating integrated volume. The standard provides recommendations and mandatory installation requirements to ensure correct meter selection, correct hydraulic connections and fittings, protection from environmental and hydraulic stress, and correct first operation/commissioning of new or repaired meters. It is intended for single meters and meter groups, and is technology neutral (covers mechanical, electromagnetic and electronic meters and ancillary devices where relevant).

Key topics and requirements

• Criteria for selection of meter type and size (pressure, available head, temperature, water quality and expected flow profile).
• Recommended associated fittings upstream and downstream (stop valves, strainers, straight-run requirements or flow straighteners, sealing for tamper detection, adjustable-length fittings, purge/drain devices, check valves where needed).
• Accessibility, orientation and mounting requirements to permit reading, maintenance and safe removal (including mass/weight handling considerations).
• Protection against shock, vibration, freezing/heating extremes, flooding, corrosion and hydraulic phenomena (water hammer, cavitation, air entrainment).
• Earthing/shunt and electromagnetic compatibility provisions for electronic/electromagnetic meters and ancillary devices.
• Requirements and recommendations for grouping meters, parallel operation and multiple-meter arrangements.
• Commissioning/first-operation procedures for new or repaired meters to ensure accuracy and reliable reading.
• Notes on ancillary electronic devices: optional in the standard but potentially required by national regulations or application-specific rules.

Typical use and users

Used by water utilities, meter manufacturers, installation contractors, building services engineers, metrological laboratories, inspection bodies and regulators. Typical applications include selection and installation of domestic, commercial and industrial cold and hot water meters, design of meter chambers, commissioning procedures, and specifications for procurement and acceptance testing of installed meters.

Related standards

Part of the ISO 4064 series — see ISO 4064‑1 (metrological and technical requirements), ISO 4064‑2 (test methods), ISO 4064‑3 (test report format) and ISO 4064‑4 (non‑metrological requirements). The series is often published/adopted in parallel as EN ISO 4064 and is referenced alongside national metrology rules and regional regulations for measuring instruments.

Keywords

water meter, installation requirements, cold potable water, hot water, commissioning, fittings, selection criteria, meter grouping, earthing, ISO 4064

FAQ

Q: What is this standard?

A: ISO 4064-5:2014 is Part 5 of the ISO 4064 series and covers installation requirements for water meters used on cold potable and hot water systems.

Q: What does it cover?

A: It covers meter selection criteria, recommended upstream and downstream fittings, installation and mounting rules, protection against environmental and hydraulic hazards, earthing and EMC considerations for electronic meters, grouping/parallel operation, and commissioning/first-operation procedures.

Q: Who typically uses it?

A: Water utilities, meter manufacturers, installers and contractors, building services and mechanical engineers, metrology/test laboratories, inspection bodies and regulators use it for specifying and executing correct meter installation and commissioning.

Q: Is it current or superseded?

A: ISO 4064-5:2014 has been withdrawn and superseded by a later edition. The replacement is ISO 4064-5:2025 (Edition 2, published September 2025). For new procurement or compliance work use the 2025 edition or your applicable national adoption of that edition.

Q: Is it part of a series?

A: Yes — it is part of the ISO 4064 series (Parts 1–5) addressing metrological, test, reporting, non‑metrological and installation requirements for water meters.

Q: What are the key keywords?

A: Water meter, installation, commissioning, potable water, hot water, fittings, selection, earthing, ISO 4064.