covering most two-stage HSI systems

Compatible with Maxitrol RV91 and 210E Series gas regulators

What capacitor is required for the US Motors 1697

ensuring tight shut-off even under light load conditions

It features standard 1/2" x 1/2" NPT inlet and outlet ports

McDonnell & Miller 7-B Switch 30067439-890 covering most two-stage HSI systemsThe 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