Hoffman 401485

78, ¾” 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)