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A circle with one solid triangle pointing outward.
Also known as: Fixed pump symbol, Constant displacement pump
In ISO 1219 fluid power diagrams a circle containing a solid triangle denotes a fixed displacement pump: one that moves the same volume per revolution regardless of demand. The triangle points in the direction of flow out of the pump.
Denotes a pump whose displacement per revolution is fixed, the solid triangle marking the direction of flow out of the unit.
Contexts: Technical drawing
Uses a solid triangle for liquid; a pneumatic component of the same function carries an open triangle instead, which is how a reader tells hydraulic from pneumatic at a glance.
Contexts: Technical drawing
A circle with one solid triangle inside it, its point touching the circle edge and directed outward along the outlet line.