Clippard M-SMAV-3 3-Way Normally-Open or Normally-Closed Stem Valve, Metric, 4 Colors of Snap-On Push Buttons Included with Each Valve
3-Way Toggle and Push Button Valve have 1/16€ tube barbs. The pushbutton valve can be used as a normally open or normally closed 3-way. The miniature limit valve is designed to serve as a mechanical stop when the stem is fully depressed