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A circle with an open triangle pointing inward.
Also known as: Pneumatic motor symbol, Compressed air motor
In ISO 1219 fluid power diagrams a circle with an open triangle pointing inward denotes an air motor: compressed air drives the unit to produce rotation.
Denotes a motor driven by compressed air.
Contexts: Technical drawing
Completes the four-way set of pump, motor, compressor and air motor, distinguished by triangle fill and direction alone.
Contexts: Technical drawing
A circle with one open unfilled triangle inside it, its point directed inward towards the centre.