R72DB0103DF Mortex R454B TXV 1.5-3 Ton

The R72DB0103DF is the factory‑specified R‑454B thermostatic expansion valve used in updated Mortex and Nordyne evaporator coil assemblies. Designed for 1.5–3 ton systems, this TXV provides precise refrigerant metering, stable superheat, and reliable cooling performance under R‑454B’s A2L operating characteristics. The DF revision includes updated OEM mounting hardware, improved bulb‑strap configuration, and metering calibrated specifically for R‑454B coil platforms. Direct OEM fit for R‑454B Mortex coil housings and compatible outdoor units.

Cross Reference:

• R72DB0103DF (current OEM, DF revision)

• Mortex/Nordyne R‑454B TXV, 1.5–3 Ton

• Successor to R‑410A TXV R72DB0053DF

• Compatible with updated R‑454B tube‑and‑fin and micro‑channel coils