(Graphical Symbols for Diagrams) prefix to distinguish them from other symbols in the ISO Online Browsing Platform. Svenska institutet för standarder, SIS 2. Content of the (Former) Part 3
, the stand-alone version of ISO 14617-3 (Connections and Related Devices) has been officially withdrawn It has been superseded by the newly published ISO 14617-2:2025 What’s New in the 2025 Revision?
: The official ISO Store is another reliable source.
If your diagram includes fiber optics (e.g., SCADA systems), the 2002 standard had no symbol. The 2021 update provides a specific double-arrow node. Using electrical symbols instead is now a non-conformity. iso 146173 pdf updated
served as the definitive guide for "Connections and related devices," providing standardized symbols for functional connections, mechanical links, and pipelines. However, the landscape of engineering documentation has evolved, leading to a massive restructuring of the entire ISO 14617 series. Key Changes in the 2025/2026 Update: Merging of Parts
The 2021 update (confirmed in 2022) introduced several critical modifications. Here is what you will find in the that differs from the 2002 edition:
┌────────────────────────────────────────────────────────┐ │ PREVIOUS MULTI-PART FORMAT │ │ ISO 14617-1, -2, -3, -4 ... up to -15 │ └───────────────────────────┬────────────────────────────┘ │ Consolidated & │ Harmonized ▼ ┌────────────────────────────────────────────────────────┐ │ CURRENT REVISED FRAMEWORK │ │ • ISO 14617-1: General Information & Navigation │ │ • ISO 14617-2: Consolidated Global Symbol Library │ └────────────────────────────────────────────────────────┘ (Graphical Symbols for Diagrams) prefix to distinguish them
Are you updating your for a specific industry, such as HVAC or chemical processing, and need advice on implementing these new GSD prefixes?
: Universal line conventions for carrying liquids or gases.
: Provide training and awareness programs for personnel involved in surveillance activities. : The official ISO Store is another reliable source
: Ensure a "quick-release coupling" or "flexible pipe" is interpreted the same way in Tokyo as it is in Berlin. Facilitate Global Collaboration
The series consists of 15 parts, each covering a specific category of components or functions. In many cases, the ISO 14617 series has superseded older, fragmented national standards, providing a single source of truth for over a thousand standardized symbols.
Always verify that you are buying the .
Stand for foundational Application Rules governing how symbols can be bent, rotated, or mirrored.