Armstrong International D41790 Air Vent Els PW 17895 it functions reliably starting at

it functions reliably starting at 0 PSI

Confirm the insertion well diameter of your compressor is exactly 5/8"

it is the correct specification for Tempstar

Reduces installation labor by providing a direct-fit solution for threaded stem valves

Armstrong International D41790 Air Vent Els PW 17895 it functions reliably starting atThe 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