Resideo Honeywell EA79A1004 1/2″ FNPT & 3/4″ MNPT, Industrial Auto Vent, for Hydronic Systems

Resideo Honeywell EA79A1004 Industrial Air Vent purges air from high pressure mains and equipment in hot or cold closed water systems. Features: Built-in shutoff valve for servicing without system shutdown. Built-in vacuum breaker. Removable float/valve assembly for easy servicing. Safety drain connection and vent cap with leakage guard. Brass shell construction. Internal parts made of corrosion-resistant and chemical-resistant materials for use with water systems containing propylene glycol, mineral oils, or petroleum-based oils. Replaces Hoffman # 79 or Dole # 75 Vents. Maintains quiet and efficient operation.