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A circle with an open triangle pointing outward.
Also known as: Compressor symbol, Pneumatic pump symbol
In ISO 1219 fluid power diagrams a circle containing an open triangle denotes an air compressor: the pneumatic counterpart of a hydraulic pump.
Denotes a compressor delivering air into a pneumatic circuit.
Contexts: Technical drawing
Uses an open triangle where a hydraulic pump uses a solid one, which is the convention distinguishing gas from liquid throughout the standard.
Contexts: Technical drawing
A circle with one open unfilled triangle inside it, its point touching the circle edge and directed outward.