Williams P271100 Flame Sensor the BKT287-1R follows standard 35mm

the BKT287-1R follows standard 35mm top-hat DIN rail dimensions

000 ohm Type III NTC thermistor

and the necessary line connections for integration with your gas control valve

these part numbers refer to the exact same relieving repair kit for Watts miniature air regulators

Sub-Panel Ready: Compact 50VA footprint fits efficiently into crowded control cabinets

Williams P271100 Flame Sensor the BKT287-1R follows standard 35mmThe Williams P271100 Flame Sensor is a critical OEM safety component engineered for precise flame rectification in Williams Forsaire counterflow furnaces. This sensor acts as the primary safeguard for the ignition sequence, utilizing a heat resistant probe to detect the presence of a burner flame. By communicating a microamp signal back to the integrated furnace control, it ensures that the gas valve remains energized only when a steady flame is