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Confirm the insertion well diameter of your compressor is exactly 5/8"
Proper installation requires a calibrated manometer to set the 10" W
Common indicators include the valve failing to close completely
To ensure accurate monitoring
it functions reliably starting at 0 PSI
Armstrong International D41790 Air Vent Els PW 17895 Confirm the insertion well diameterThe 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
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