making it suitable for both chilled water and heating hot water applications

it is designed for a dry fit against clean

Includes Universal Mounting Bracket

ensuring tight shut-off even under light load conditions

McDonnell & Miller 7-B Switch 30067439-890 making it suitable for bothThe McDonnell & Miller 7 B Switch (Part Number 110800) is a critical component for specialized boiler control systems requiring potentiometer proportional control. This auto reset low water cut off switch is engineered to work in tandem with Series 93 and 94 pump controllers, providing precise positioning for modulating valves and ensuring consistent water levels in commercial steam applications. Unlike standard snap action switches, the 7 B utilizes