verify that the existing orifice and manifold pressure settings align with the technical specifications of this natural gas burner to ensure safe and reliable ignition across all firing cycles

ensuring direct spark ignition or standing pilot alignment is maintained according to factory specs

The unit features a standard 1/2-inch NPT inlet and outlet for seamless integration with existing gas piping

Its compact switching relay design facilitates easy troubleshooting and terminal identification

Using this spring in other series will result in incorrect spring rates and potential regulator failure

Trane ORF0516 Orifice 318518-761 verify that the existing orificeWhen you're dealing with a residential or commercial gas furnace that isn't reaching its temperature setpoint during peak load, the Trane ORF0516 is the exact #42 High Fire Orifice required to restore proper combustion and gas manifold pressure. This OEM furnace gas orifice is precision machined to regulate fuel delivery in high fire stages, ensuring your burner assembly operates at its peak thermal efficiency. As a veteran grade Trane HVAC