Hoffman 78, 3/4" Straight Water Main Air Valve

For use on high pressure hot or cold water or glycol mains and process applications with specific gravity greater than 0.7 Cast brass body Tapped at top for 1⁄8" NPT safety drain connection for discharging moisture Body unscrews for easy cleaning Built-in Check Valve 3⁄4" NPT straight shank Maximum operating pressure 150 psig (10.3 bar)(Drop away pressure - maximum pressure against which the vent can open). Maximum hydrostatic pressure 450 psig (31.1 bar) Maximum temperature 250°F (121°C)