often referred to as the See-All sight glass

Direct OEM Compatibility: Engineered as the exact replacement for 632622

The Williams P254000 Thermocouple is a high-performance flame sensing replacement designed specifically for Williams gas-fired furnaces and wall heaters

this Fenwal replacement part features a professional-grade 1/4-inch female quick-connect terminal with a fully insulated design to prevent voltage leaks and ensure peak dielectric strength

separate pilot burner and flame sensor configurations

Johnson Controls A19ABA-4 Utility Thermostat 30067439-890 often referred to as theThe Johnson Controls A19ABA 4 Utility Thermostat is a rugged, single stage remote bulb temperature control engineered for high accuracy cycling in commercial refrigeration and HVAC systems. Designed with a liquid filled sensing element, this controller maintains precision "repeat" accuracy regardless of barometric pressure or cross ambient temperature fluctuations. The A19ABA 4 features a broad 120 208 240 Vac compatibility and SPST (Single Pole