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Designed specifically for expansion tank mounting
Powered directly through the thermostat interface
Rapid detection of flame signal prevents ignition lockouts and unsafe gas accumulation
lighting systems
McDonnell & Miller 42-1 Replacement Casting Els PW 17895 Designed specifically for expansion tankWhen you are in the field servicing a Series 42S Low Water Cut Off, a cracked or compromised housing is a non negotiable repair. The McDonnell & Miller 42 1 Replacement Casting is the exact OEM specification body required to restore the structural integrity of your boiler pump controller. This heavy duty cast iron replacement part is engineered specifically for the 42S Series, ensuring a precise fit with the head mechanism and bellows assembly. As a