AccuAir 3/8" DOT/PTC Tee to 1/8" NPT Female (Pressure Sensor Tee)

Push-to-connect tee fitting that lets you tap a pressure sensor into an existing 3/8" airline without cutting into your plumbing layout. The 1/8" NPT female port accepts standard pressure sensors.

Small part, but the right one to have on hand when you're adding a gauge or sensor mid-line.