McDonnell & Miller 157S-MD Pump Controller R-410A What is the benefit of

What is the benefit of the Viton seal in this solenoid valve

or undersized ductwork causing the heat exchanger to reach the 185°F limit prematurely

preventing contactor chatter or control failure

OEM Compatibility: Exact replacement for Amana-Goodman B1368000 and B1368000S part numbers

McDonnell & Miller 157S-MD Pump Controller R-410A What is the benefit ofSecure high performance water level management with the McDonnell & Miller 157S MD Pump Controller (Part Number 175412), a heavy duty combination low water cut off and pump controller designed for industrial and commercial steam boilers. Engineered for maximum differential operation, this model is built to prevent nuisance burner shutdowns caused by volatile, fluctuating water lines, making it an essential component for high demand boiler water level