Hoffman 78 Main Air Valve

This Hoffman product is for use on high pressure hot or cold water or glycol mains and process applications with specific gravity greater than 0.7. It is made of a cast brass body and is tapped at top for 1/8" NPT safety drain connection for discharging moisture. The body unscrews for easy cleaning and has a built-in check valve. There is a 3/4" NPT straight shank with a maximum operating pressure 150 psig (10.3 bar). The maximum hydrostatic pressure 450 psig (31.1 bar) and has a maximum temperature 250°F (121°C).

Technical Literature: