Armstrong International A21191 Electrode Set 30067439-890 The unit is housed in

The unit is housed in a durable

test for continuity across the coil or use a magnet test to check for a functional magnetic field

Universal Compatibility: Wide supply voltage range (15-40 VDC/18-28 VAC) ensures compatibility with most standard building controllers

this valve is factory set at 30 PSI and delivers a certified 970

Frequent trips usually indicate restricted airflow caused by a clogged air filter

Armstrong International A21191 Electrode Set 30067439-890 The unit is housed inThe Armstrong International A21191 Electrode Set is a critical OEM replacement part designed for high precision water level monitoring in industrial and commercial humidification systems. This authentic water level electrode set of 3 is specifically engineered for compatibility with the Armstrong HumidiClean HC Series (including models HC 4100, 4145, 4300, and 4500) and GFH Series humidifiers. By utilizing advanced conductivity sensing technology,