York S1-029-20423-042 Orifice Key Benefits Precision-Engineered Fit: Exact

Key Benefits Precision-Engineered Fit: Exact physical specifications (6" x 7" x 1") ensure compatibility with Nor East Controls 1400 and 8100 Series valves

and DGAM series

The Watts 1053017 is engineered for the 70A

a calibrated manometer is necessary to verify manifold pressure after the York S1-029-20423-055 is installed

Common indicators include intermittent furnace cycling

York S1-029-20423-042 Orifice Key Benefits Precision-Engineered Fit: ExactAs a veteran HVAC service tech, you know that combustion performance starts with precise fuel metering. The York S1 029 20423 042 #42 Natural Gas Burner Orifice is a genuine OEM York furnace part engineered specifically for technical compatibility with residential and commercial heating units. This #42 drill size orifice is factory calibrated to deliver approximately 25,000 BTU hr per burner at standard 3. 5" w. c. manifold pressure, ensuring stable