What am I looking at?
Visual recognition
Small three-port valve with a rotating selector handle; the handle position provides the principal visual clue to which fluid pathway is closed.
06-09
Three-way stopcock
Three-port flow valve
Three-panel learning framework
Recognition, context, and distinction
What does it do, and where will I see it?
Use & procedural context
Three-port valve that directs flow among syringe, catheter, and tubing for injection, flushing, aspiration, or pressure measurement. Typical procedural contexts include contrast and saline injection, flushing, aspiration, and pressure transduction.
What most clearly distinguishes it from similar devices?
Key distinctions
The selector handle determines which port is closed, making orientation of the handle the critical operational distinction from a simple fixed connector.