Utica-Dunkirk 1580006 Vent Air Purge 1/8" NPT

The Utica-Dunkirk 1580006 Vent Air Purge 1/8" NPT is an air removal fitting used to vent trapped air from hydronic or boiler piping circuits. It operates through a small internal passage that allows accumulated air to be released from the system while maintaining sealed fluid operation under normal pressure conditions in HVAC systems. Installed in boiler assemblies and hydronic heating lines, it is mounted at high points or designated purge locations to prevent air binding, improve circulation efficiency, and support stable heat transfer performance in residential and light commercial systems.