ISO 13341:2010/Amd 1:2015

Overview

ISO 13341:2010/Amd 1:2015 is an important international standard published by the International Organization for Standardization (ISO), focusing on the fitting of valves to gas cylinders. As an amendment to the original 2010 edition, this 2015 update provides critical clarifications and modifications to ensure safety, reliability, and compatibility in valve installation on gas cylinders. The standard is maintained by ISO/TC 58, the technical committee responsible for gas cylinders.

This document safeguards the integrity of valve-thread compatibility and sealing methods, which are crucial for preventing leaks and ensuring safe handling and transport of gases stored under pressure. It aligns with key ISO standards for thread dimensions and sealing techniques.

Key Topics

• Valve and Cylinder Thread Compatibility
  The amendment emphasizes that threads on valves and cylinders must be examined to ensure they conform to the same dimensional standards, such as:

  • ISO 11363-1
  • ISO 15245-1
    Alternatively, they should meet the interchangeability requirements of ISO/TR 11364.

• Identification and Marking
  Some standards mandate marking the valve and cylinder threads to avoid mismatches, referencing ISO 10297 and ISO 13769 for identification guidelines.

• Valve Installation and Sealing Procedures
  The amendment updates the method for sealing taper threaded valves:

  • Use of sealant tape compliant with section 5.2
  • Use of soft metal caps as per section 5.3
  • Alternative sealing methods such as pressure-sensitive pastes or PTFE cones (following manufacturer instructions) are acknowledged for sealing effectiveness.

• Safety and Quality Assurance
  Ensuring correct valve fitting reduces gas leakage risks, protects users, and maintains cylinder integrity during transportation and use.

Applications

ISO 13341:2010/Amd 1:2015 applies predominantly to industries and stakeholders involved in:

• Gas cylinder manufacturing and maintenance – Ensuring valves are properly fitted to maintain safety and compliance.
• Gas supply and distribution – Verifying valve compatibility reduces operational hazards when replacing or servicing cylinders.
• Regulatory bodies and safety inspectors – Facilitating assessment against recognized standards for gas cylinder equipment.
• Engineering and design firms – Applying consistent standards in gas storage system component design, particularly valves and their fittings.
• Certification bodies – Utilizing the standard to audit conformity of cylinder-valve assemblies before market release.

Related Standards

To support valve and thread fitting, ISO 13341:2010/Amd 1:2015 references and works in conjunction with several ISO standards, including:

• ISO 11363-1 – Gas cylinders - Thread dimensions for valves and valve outlets.
• ISO 15245-1 – Gas cylinders - Valve outlet connections for gas cylinders with certain thread standards.
• ISO/TR 11364 – Interchangeability of cylinder and valve thread types, facilitating compatibility.
• ISO 10297 – Cylinder valve specifications and marking requirements.
• ISO 13769 – Identification for valve and gas cylinder outlet threads.

Summary

ISO 13341:2010/Amd 1:2015 enhances the international guidelines on safely fitting valves to gas cylinders by clarifying thread compatibility and sealing methods. Its practical standards help manufacturers, service providers, and safety professionals ensure reliable valve installations, reducing risks of dangerous leaks or operational failures. By aligning with related ISO thread and marking specifications, it supports global harmonization in gas cylinder safety management.

Keywords: ISO 13341 amendment, gas cylinder valves, valve fitting standards, gas cylinder thread compatibility, valve sealing methods, ISO gas cylinder standards, valve installation safety