The updated defines the universal graphical symbols used across engineering diagrams to represent functional connections, mechanical links, pipelines, and related hardware devices . Managed under the technical committee ISO/TC 10 (Technical product documentation) , this comprehensive framework streamlines global engineering workflows by eliminating cross-border language barriers.
I notice you're asking about (not 146173). Here’s a helpful review and guidance on the updated version.
If you work in engineering, drafting, or technical design, ensuring your schematics are universally understood is vital. Universal comprehension requires a strict set of standardized graphical symbols. is the international standard dedicated entirely to graphical symbols for diagrams —specifically focusing on connections and related devices .
Then search for (latest) or the specific part number. The full family includes parts for fluid power, electrical diagrams, and process measurement symbols. iso 146173 pdf updated
The updated ISO 14617 series introduces several critical changes to modernize engineering diagrams:
Whether you are looking for the latest specifications or trying to understand how this standard shapes modern engineering blueprints, this comprehensive guide will walk you through its purpose, key symbols, and where to access the documents. What is ISO 14617-3?
, the stand-alone version of ISO 14617-3 (Connections and Related Devices) has been officially withdrawn It has been superseded by the newly published ISO 14617-2:2025 What’s New in the 2025 Revision?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 updated defines the universal graphical symbols used
: The standard provides guidelines for establishing performance metrics and monitoring procedures to evaluate surveillance system effectiveness.
Detailed components (Valves, Pumps, Heat Transfer, etc.).
For systems requiring fast maintenance intervals, quick-disconnect fittings are vital. Symbols like X563 define the schematic representation of a quick-release coupling. The standard ensures that the flow orientation, check-valve configuration inside the coupling, and open/closed separation are clearly visible on the schematic layout. Here’s a helpful review and guidance on the
Most fluid power symbols were removed because they are already defined in . New symbols for vacuum technology were added.
It was developed in close cooperation with the IEC to ensure symbols are compatible with electrotechnical standards like IEC 60617 .
All registration numbers for symbols now include a " GSD " prefix to facilitate easier identification in CAD libraries.