Overview The Honeywell EA122A Automatic Air Vent purges air from high pressure mains and equipment in hot or cold closed water systems. Features: ◦Includes removable float/valve assembly for easy servicing. ◦Not for use in steam systems. ◦Body, cover and float assembly made of thermoplastics. ◦Internal parts made of corrosion-resistant and chemical-resistant materials for use with water systems containing light concentrations of propylene glycol, mineral oils, or petroleum-based oils. ◦Oil resistant seal. ◦NBR seat disc and O-ring.