This bronze body steam regulator is specifically designed for applications requiring precise downstream control

Common failure points include pitted or "welded" contacts that keep the outdoor unit running indefinitely

providing high-capacity performance for residential and light commercial HVAC units

and commercial boilers

Lochinvar & A.O. Smith 100167774 Control Board 322027-701 This bronze body steam regulatorThe Lochinvar & A. O. Smith 100167774 Control Board is a critical OEM replacement part designed specifically for the Lochinvar Knight XL KBN399 series heating boilers. As an integrated main control board, it manages the entire sequence of operation, from initial ignition control to flame sensing and blower motor timing. This board is engineered to interface seamlessly with commercial water heaters and high efficiency boilers, ensuring precise water