Lochinvar & A.O. Smith 100074451 PCB 321894-708 provided the connection sizes match

provided the connection sizes match your suction line

While it is primarily for International Comfort Products

and VG9000 series globe valves

The triangular bracket configuration is designed for mounting surfaces where the shaft is perpendicular to the frame

Lochinvar & A.O. Smith 100074451 PCB 321894-708 provided the connection sizes matchThe Lochinvar & A. O. Smith 100074451 PCB is a critical integrated control module designed for high efficiency commercial and residential water heaters and boilers. Known as the MC50 PCB, this genuine OEM component manages vital system operations including ignition sequences, temperature regulation, and safety circuit monitoring. Engineered for a precise fit in Lochinvar Knight and various A. O. Smith tankless models, it ensures absolute signal