It operates with a precise 3

This unit serves as the direct replacement for Berko 3900-2011-000

Internal Regulation: Allows for reliable performance even when powered by unregulated power supplies

making it ideal for regulating hot water

It features a range of 20 inches Hg to 100 PSIG

McDonnell & Miller 328100 Replacement Casting Refrigerant It operates with a preciseThe McDonnell & Miller 328100 is an authentic OEM replacement casting specifically engineered for the 157 R Series low water cut off and pump controllers. This heavy duty 157 R casting provides the structural foundation for your float chamber, ensuring a pressure tight seal in high demand residential, commercial, and industrial steam boiler applications. In the field, these castings are critical for maintaining system integrity when original housings