the 39H23 is designed to withstand the high-cycle demands of modern economizers and air handling units without deforming or slipping

the regulator must not be mounted upside down to ensure proper pressure diaphragm operation and safety compliance

helping contractors identify moisture contamination before acid formation leads to compressor failure

Featuring a robust cast iron body paired with premium stainless steel trim

including the 810-10128 series

Utica-Dunkirk 240009838 Low Water Cut Off 322057-301 the 39H23 is designed toThe Utica Dunkirk 240009838 Low Water Cut Off is a critical safety component designed for residential hydronic heating systems. As a primary safeguard against dry firing, this 24VAC low water cut off uses advanced electronic probe sensing to monitor boiler water levels with precision. It is effectively a field proven Hydrolevel Safgard 1100, featuring a compact design that fits into tight cabinet spaces often found in modern high efficiency units. The