McDonnell & Miller 42-1 Replacement Casting R-410A reducing heat soak during continuous

reducing heat soak during continuous duty applications

To prevent oil or sediment from accumulating in the internal sensing element

Why is my relief valve still dripping after installing the kit

ensuring stable flame characteristics throughout the modulation range

McDonnell & Miller 42-1 Replacement Casting R-410A reducing heat soak during continuousWhen 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