this SPDT switch (Single Pole Double Throw) provides a reliable proof-of-open signal when the valve reaches its full-open stroke

The Armstrong Furnace R43127-001 Flame Sensor is a critical OEM replacement part designed for precision flame rectification in residential heating systems

specifically designed for adjustable brewer support and cabinet stabilization

it is compatible with many Coleman and Luxaire units that utilize part S1-025-29759-001 or 025-29759-001

This process significantly reduces stack temperatures and lowers fuel consumption without requiring a full system overhaul

Lochinvar & A.O. Smith 100093802 Door Assembly 322055-301 this SPDT switch (Single PoleThe Lochinvar & A. O. Smith 100093802 Door Assembly is a specialized natural gas manifold replacement engineered specifically for technical repair of Flammable Vapor Ignition Resistant (FVIR) burner systems. As a critical component in the combustion chamber assembly, this NG manifold door ensures a hermetic seal against the water heater tank, maintaining the integrity of the Flame Guard B system. The assembly features a resettable door switch (thermal