Optimized for a 3-second heat-up time

Common Questions: What valve sizes is the 599-03390 compatible with

Certified Safety: National Board capacity certified and registered in all Canadian provinces (CRN #0G8547

and Cadet series

If the probe is longer than the duct width

Resideo EA79A1004 Air Vent R-410A Optimized for a 3-second heat-upThe Resideo EA79A1004 Air Vent is a professional grade solution for purging air from high pressure mains and equipment in both hot and cold closed loop water systems. Designed with a heavy duty brass shell construction, this industrial grade automatic vent ensures quiet and efficient system operation by eliminating air pockets that cause airlock and noise. This 3 4" AutoAirVent W Shutoff includes a dual connection configuration with a 3 4 inch male