Ball Valve Fitting, 1/4 in. NPT Male x Female, Lever Handle, Chrome Plated
This is a steel ball valve, with a large plastic handle. On mobile robots, this can act as a vent valve. It has two ports, one being a 1/4" NPT male and one being a 1/4" NPT female port
Have not used yet.
Not exactly what I pictured but functional.