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A closed rectangle holding fluid above atmospheric pressure.
Also known as: Closed reservoir symbol, Sealed tank symbol
In ISO 1219 fluid power diagrams a pressurised reservoir is drawn as a fully closed rectangle, holding fluid above atmospheric pressure to help feed the pump.
Denotes a reservoir held above atmospheric pressure.
Contexts: Technical drawing
Is distinguished from the vented reservoir only by having a closed top edge, which is easy to miss on a crowded drawing.
Contexts: Technical drawing
A rectangle drawn closed on all four sides, with lines entering through its boundary.