Overview
ISO/TR 7470:2026 is a technical report developed by the International Organization for Standardization (ISO) that provides a comprehensive list of provisions related to gas cylinder valve outlets in current use worldwide. This document specifies details for valve outlet thread types and sizes for different gases, serving as an essential reference for gas cylinder manufacturers, suppliers, and regulatory bodies. While the report lists the types and dimensions of valve outlets, complete technical descriptions for specific valve outlets are provided separately in relevant national standards.
Key Topics
- Valve Outlet Listings: ISO/TR 7470:2026 organizes gas cylinder valve outlets by country and by thread type, offering a systematic overview of global practices.
- Thread Types and Sizes: The report presents details about the various thread types and nominal sizes used in gas cylinder valve outlets, supporting standardization and compatibility.
- Gas Identification: Each gas is identified by its UN number, facilitating accurate reference and regulatory compliance.
- Cross-Referencing: The document directs users to country-specific and thread-specific tables, which provide further details via a downloadable spreadsheet.
Applications
ISO/TR 7470:2026 delivers practical value across multiple sectors where gas cylinders and their fittings are crucial:
- Gas Cylinder Manufacturing: Ensures manufacturers select appropriate valve outlet types and thread dimensions based on country and gas type, supporting international trade and reducing the risk of incompatibility.
- Safety and Regulatory Compliance: Facilitates adherence to safety regulations by referencing standardized valve outlets, mitigating the risks arising from incorrect fittings or connections.
- Gas Distributors and Industrial Gas Users: Enables distributors and end users, including those in medical, industrial, and laboratory settings, to source and specify compatible gas cylinders and valve assemblies, reducing operational disruptions.
- National Standards Development: Aids national standards bodies in aligning their valve outlet specifications with international practices and establishing or updating their own comprehensive standards for gas cylinders.
Related Standards
Users of ISO/TR 7470:2026 may also benefit from referring to the following related standards for complete technical information and conformity:
- National Standards on Valve Outlets: This technical report notes that full technical descriptions are defined at the national level. Users should consult their country’s standards for detailed requirements.
- ISO/TC 58 Series: The ISO Technical Committee 58 and its subcommittees publish a range of standards on gas cylinder design, filling, labeling, and connector fittings.
- ISO Cylinder Fittings Standards: Other ISO documents address the mechanical and safety requirements for valve designs, testing methods, and performance specifications.
- IEC Electropedia and ISO Online Browsing Platform: For definitions and additional terminology related to gas cylinders and valve outlets.
Practical Benefits
ISO/TR 7470:2026 streamlines global operations in the gas industry by:
- Promoting compatibility and interoperability of gas cylinders and valves across borders
- Supporting safety in pressurized gas handling through standardized designations
- Enhancing efficiency for manufacturers, distributors, and users when selecting cylinder and valve types
For comprehensive and up-to-date information on gas cylinder valve outlets, refer to ISO/TR 7470:2026 and the dynamically maintained spreadsheet accessible via the ISO standards platform. By incorporating this standard into procurement, manufacturing, and compliance processes, organizations can achieve higher levels of safety, reliability, and international alignment.
