4. Pneumatic diagrams
The international standard ISO 1219 comprises the following parts, presented under the general title "Hydraulic and pneumatic power transmission – Graphical symbols and circuit diagrams:"
Part 1: Graphic symbols in conventional and computerized use.
Part 2: Circuit diagrams.
Component symbols show the components in their rest position. Symbols for components that do not have a clearly defined rest position must be created in accordance with the component-specific symbol creation rules set forth in Part 1 of ISO 1219.
In the diagrams (ISO 1219-2), unless otherwise specified, components are shown in the "ready to start" position, with pressure applied. Circuit diagrams must be clear and allow the movements...
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Pneumatic diagrams