TS ISO 1219-1

TS ISO 1219-1 is the core standard for how graphic symbols are constructed and presented consistently in fluid power circuit diagrams. In hydraulic and pneumatic documentation, symbols replace full pictorial representation with an efficient functional language, so that components can be read quickly and unambiguously in schematics. This part also addresses fixed-dimension symbols intended for use in data-processing applications.

How fluid power symbols are organised

In technical schematics, symbols emphasize function and circuit relationships rather than physical appearance. That is why a valve, actuator, pump or other component can be represented in a compact form that still conveys its role in the system. The standard establishes the basic elements used to devise these symbols and the rules for combining them, helping different drawings remain consistent across manufacturers, projects and documentation environments.

Relationship to ISO 14617 and digital use

The standard is described as a collective application standard of the ISO 14617 series, which places fluid power notation within a broader framework for graphical symbols. In practical terms, this supports compatibility with general technical drawing practice while keeping fluid power conventions clear and disciplined. Its fixed-size symbol concept is especially relevant to digital drafting and data-processing workflows, where symbols may need to be used directly and may result in different variants.

• Basic rules for graphic symbols used in fluid power circuit diagrams
• Fundamental elements used to construct symbols
• Organisation of component symbols in technical drawings
• Fixed-dimension symbols for data-processing systems
• A collective application approach aligned with the ISO 14617 series