McDonnell & Miller 42S-N Controller 30067439-890 and freeze-thaw cycles found in

and freeze-thaw cycles found in suction line applications

3 Cv equal percentage flow characteristic for precise modulation of hot water

This specific 700 Series model is factory-set to snap on at 50% capacity and modulates to full input based on thermal demand

1-watt solenoid coil is specifically designed for integration with ASCO Series 238 solenoid valves

Integrated Diagnostics: Features onboard LED indicators to expedite furnace troubleshooting by identifying airflow

McDonnell & Miller 42S-N Controller 30067439-890 and freeze-thaw cycles found inMcDonnell & Miller?42S N Combination Low Water Cut Off and Pump Controller with SPST Snap Action Switches and Glass Connector for Steam Boilers (Part Number 129802) This item is not qualify for free shipping.