Hoffman H78 Water Vent Valve 150 PSI

Model 78 Water Main Air Vent Valve, Cast Brass, Tapped at top for 1/8" NPT Safety Drain Connection for Discharging Moisture, 3/4" NPT Straight Shank, Built-In Check Valve, Body Unscrews for Easy Cleaning, Maximum Operating Pressure 150 PSI, Maximum Pressure 450 PSI, Maximum Temperature 250°F, for use on High Pressure Hot or Cold Water or Glycol Mains and Process Applications with Specific Gravity greater than 0.7