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ResourcesDWG symbol librariesISO 14617: Graphical symbols for diagrams

Installation diagrams and network maps

ISO 14617: Graphical symbols for diagrams: Installation diagrams and network maps: 109 ready-made AutoCAD blocks (DWG), free to download and use in your own projects, as a ZIP or one symbol at a time.

109 blocks: installation of pipelines and ducts, water taps, hydrants, devices for measurement, control and protection, water heaters, air conditioners and technical plants.

Version 1.0 · updated October 17, 2026

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Using AutoCAD 2017 or an earlier version? Download the 2010 format

Free to use and modify in your own projects, including commercial ones. The ZIP holds one plain DWG file in AutoCAD 2018 format and a README; no add-in needed. Provided as is, without warranty.

All 109 symbols

109 of 109 symbols

Missing a symbol? Tell us which one.

Attributes for parts lists

Symbols of devices carry a visible tag (for example V-101) and invisible attributes for the schedule: SERVICE, SIZE, FLOW_M3H, POWER_KW, RANGE, SIGNAL, MANUFACTURER, MODEL and REMARKS. Plain graphical symbols such as lines, arrows and qualifiers have no tag. All blocks carry STD_CLAUSE and STD_REF.

Export the blocks of a diagram to Excel with BlockSync, check the list against the drawing and write the corrections back in one run, with preview and backup.

How to use the library

  1. Unzip the file and open the DWG. Copy the symbols you need into your plan, or drag the blocks in from DesignCenter (ADCENTER).
  2. The symbols are drawn in millimetres on the module of the standard (2.5 mm), mostly 5 to 30 mm in size. Insert them at scale 1 and scale the block up or down to the size of your diagram.
  3. Place the block and join your lines to its ends. Where the standard shows a symbol together with a line or a stub, the line is part of the block. Explode a block if you need to adapt it.
  4. The standard orders its symbols as basic symbols, supplementary symbols that are combined with them, and application examples. The catalog follows that order, and the clause of every symbol is stored in the attribute STD_CLAUSE.