This is a pilot-operated valve

5 screwed entry

Key Benefits: Optimized Defrost Cycles: Prevents excessive ice buildup on outdoor coils

Common Questions Is the TOOL-87 compatible with legacy AL-87 pneumatic fittings

OEM Precision: Genuine Rheem-Ruud replacement ensures port alignment and thread pitch match the original manifold

Lochinvar & A.O. Smith 100111040 Controller 322838-753 This is a pilot-operated valveAs a seasoned technician, you know that a failing control module on a high recovery commercial unit means a complete system shutdown. The Lochinvar & A. O. Smith 100111040 Controller is the precise OEM replacement part engineered for the BTH 199 100 and BTH 199A Cyclone Xi series. This combined controller serves as the central intelligence for your commercial gas water heater, managing critical ignition sequences, flame sensing, and temperature