Ejector / eductor

ISO 10628-2 (groups 16, 17 and 20, compressors, blowers, engines) / PIP PIC001 (jet pump)

Drawn as

A converging nozzle inside a body that narrows to a throat and then widens (diffuser): the motive fluid enters at the nozzle end, suction comes in from the side, and the mixture leaves at the wide end.

Meaning

Jet pump with no moving parts: gas ejectors for low-pressure flash gas recovery, water eductors for sand jetting and drains. No dedicated component.

Variants

Some legends draw two triangles (nozzle and diffuser) tip to tip with a side branch