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A cross marking a port closed off.
Also known as: Blanked port symbol, Closed port symbol
In ISO 1219 fluid power diagrams a cross drawn at a port denotes that the port is plugged: present in the component but deliberately closed.
Marks a port that exists on the component but is closed with a plug.
Contexts: Technical drawing
Records a deliberate choice rather than an unused feature, which matters when a circuit is later modified.
Contexts: Technical drawing
A small cross drawn across the end of a port line where it meets the component boundary.