Dwyer A-310A Three-Way Vent Valve - 80 PSI Rating

Plastic three-way vent valve, 1/8" NPT to 1/4" metal tubing. Rated 80 PSI. For connecting Magnehelic gauges in applications with continuous pressure or where gauge is connected by metal or plastic tubing that can't be easily removed. Vent valve lets you check or re-zero the gauge without removal.