ISO 22760-9:2024/Amd 1:2026

Overview

ISO 22760-9:2024/Amd 1:2026 is an important international amendment published by the International Organization for Standardization (ISO) for the automotive sector, particularly focusing on road vehicle safety and performance. This amendment updates Part 9: Pressure Relief Device (PRD) of the ISO 22760 series, which covers components in dimethyl ether (DME) fuel systems. DME is gaining traction as an alternative fuel due to its clean-burning properties, especially in regions seeking to reduce vehicle emissions and improve fuel system safety.

The amendment specifically clarifies requirements related to the marking and traceability of pressure relief devices used in DME fuel systems, ensuring enhanced safety, reliability, and regulatory compliance for manufacturers and users.

Key Topics

• Mandatory Fuel Type Marking
  The amendment updates marking requirements, making it mandatory for manufacturers to indicate the type of fuel for which the pressure relief device is intended. Clear identification helps prevent misuse or incorrect installation and is essential for system integrity.

• Enhanced Traceability and Identification
  Pressure relief devices must now include:

  • Manufacturer’s name, trademark, or symbol
  • Model designation or part number
  • Working pressure and, if applicable, temperature range
  • Fuel type (now mandatory)

• Additional Recommended Markings
  For operational efficiency and compliance, it is advisable to add:

  • Direction of flow (if relevant to installation)
  • Electrical ratings (if applicable)
  • Certification agency symbols
  • Type approval number
  • Serial number or date code
  • Reference to the present standard (ISO 22760-9:2024)

Implementing thorough component identification improves quality assurance, supports recall processes, and meets international compliance requirements.

Applications

This amendment is vital for stakeholders involved in the design, manufacturing, certification, and maintenance of road vehicles using DME fuel systems. Key applications include:

• Component Manufacturers:
  Ensuring all pressure relief devices are correctly marked for DME applications, preventing installation errors and supporting international market access.

• Vehicle OEMs and System Integrators:
  Facilitating verification of DME pressure relief devices during assembly and inspection, helping to comply with both regulatory and safety standards.

• Certification Bodies and Inspectors:
  Streamlining compliance checks for DME fuel system components and supporting product traceability in the event of audits or recalls.

• Aftermarket and Maintenance Providers:
  Enabling correct identification and replacement of pressure relief devices, reducing the risk of incompatibility and enhancing vehicle safety.

Related Standards

For comprehensive coverage of DME fuel system components in road vehicles, refer to the following standards:

• ISO 22760 Series: Covers general and specific requirements for gaseous fuel system components, including testing, installation, and performance criteria for DME systems.
• ISO 15500 Series: Focuses on components for compressed natural gas (CNG) fuel systems, providing further context for those working across alternative fuel technologies.
• ISO/TC 22 and SC 41 Publications: Technical Committee 22 and Subcommittee 41 develop and maintain related standards for automotive and gaseous fuel applications.

For additional information and updates, consult the official ISO website or your national standards body.

By adopting ISO 22760-9:2024/Amd 1:2026, organizations enhance the safety, traceability, and international compliance of DME-fueled road vehicles, supporting the broader transition to alternative fuels in the automotive industry.