This blade is designed for 1/2-inch diameter shafts

installing a fresh P142700 prevents secondary air infiltration and ensures the pressure differential required for consistent flame rectification is maintained

Safety Compliance: Functions as a normally closed switch that opens immediately upon detecting a blocked flue or intake air restriction

High-grade ceramic insulation prevents voltage leakage

Precision Adjustment: Wide pressure range (10" Hg to 400 psig) handles everything from low-temp suction to high-side pressure control

Lochinvar & A.O. Smith 100161837 Valve R-410A This blade is designed forThe Lochinvar & A. O. Smith 100161837 Air Metering Valve is a precision engineered OEM replacement part designed for high efficiency combustion control in commercial boilers and water heaters. As a 24V, 50 60Hz component, this air metering valve is critical for modulating the air to fuel ratio, ensuring complete combustion and maintaining peak thermal efficiency. Built for heavy duty HVACR environments, this direct fit valve integrates seamlessly with