Armstrong International D41790 Air Vent Els PW 17895 it is optimized for York

it is optimized for York and Coleman equipment

This product may contain chemicals known to the State of California to cause cancer

The integral vent limiting orifice eliminates the need for external vent piping in most jurisdictions

and HFC refrigerants

Steam Rated Design: Robust internal components suitable for low-pressure steam applications and high-temperature water

Armstrong International D41790 Air Vent Els PW 17895 it is optimized for YorkThe Armstrong International D41790, also identified as the AV 13 brass air vent, is a specialized automatic air vent designed for hydronic heating systems and hot water service. Featuring a dual connection design with 1 2" female NPT and 3 4" male NPT ports, this float actuated valve effectively manages air binding by purging accumulated air during system operation. Constructed from high grade brass, the unit is rated for operating pressures up to 150