Trane ORF0501 Orifice 321042-401 and a main pressure regulator

and a main pressure regulator into a single

or if the control board flashes a 4-light diagnostic code

This high-reliability component is essential for maintaining the power factor and extending the operational lifecycle of motor windings in residential and light commercial cooling systems

4-pole contactor engineered for demanding HVACR applications

Trane ORF0501 Orifice 321042-401 and a main pressure regulatorThe Trane ORF0501 is a precision engineered #44 Standard Fire Orifice designed specifically for compatible Trane furnace models and gas heating systems. As a critical combustion component, this brass orifice regulates the essential fuel flow to the burner assembly, ensuring the correct gas to air mixture for stable ignition and consistent thermal output. Measuring approximately 5. 7 inches in length, this OEM replacement part provides the exact