ACV 55445007 air vent auto.3/8 with non-ret valve

Automatic Air Vent Valve 3/8" – Air Removal for Heating Systems 3/8" automatic air vent is used in ACV boilers to automatically remove air from the system, preventing blockages and noise. Compatible with: Prestige Excellence 32 HeatMaster 71 TC Smart 240 Benefits: Automatic air release 3/8" threaded connection Wide system compatibility