ensuring the 1/2" female NPT outlet is correctly aligned with flow direction is critical for the integrated check valve to function properly

checking the integrity of the burner door gasket is recommended during any ignition system service

always verify the specific York HVAC equipment manual or contact a specialist to confirm the exact tube length and port alignment

the B1370920 ensures electrical compatibility with the existing integrated control module and provides an accurate response to high-limit temperature excursions

Resideo AM100-1LF Valve 321042-401 ensuring the 1/2" female NPTThe Resideo AM100 1LF Valve is a professional grade thermostatic mixing valve designed for precise temperature regulation in domestic potable water and hydronic heating systems. Featuring 1 2" NPT connections, this lead free valve (under 0. 25% weighted average) is essential for maintaining a constant water temperature even when supply lines fluctuate in pressure or temperature. Within the trades, this unit is known for a 70 145F temperature range and