R72DB0054DF Mortex R410A TXV 2.5-5 ton

The R72DB0054DF is an OEM R‑410A thermostatic expansion valve designed for Mortex coils and air handlers. Rated for 2.5–5 tons, this TXV meters refrigerant precisely into the evaporator, improving system efficiency, superheat stability, and overall cooling performance.

This valve uses standard 3/8" inlet × 1/2" outlet ODF connections and includes an external equalizer line. It is used in straight‑cool and heat‑pump systems and is the correct OEM replacement for Mortex coils requiring the R72DB00xx TXV series.

Grounded product data:

• York S1‑R72DB0003 TXV Kit — confirms OEM Mortex TXV family.

Direct OEM Family

• R72DB0054DF — Mortex R410A TXV (2.5–5 Ton)

• S1‑R72DB0003 — York/Mortex TXV Kit

Technician Notes

• Refrigerant: R‑410A

• Tonnage: 2.5–5 Ton

• Connections: 3/8" inlet × 1/2" outlet ODF

• Equalizer: External

• Application: Mortex coils, York/Mortex OEM kits

• Symptoms of TXV failure:

  • High superheat

  • Frosting at distributor

  • Poor cooling performance

  • Hunting / unstable suction pressure

• Installation Tips:

  • Always replace the filter‑drier when replacing a TXV

  • Insulate the sensing bulb and mount at 4 or 8 o’clock

  • Verify correct bulb clamping pressure

  • Check charge after installation — TXV does not eliminate charging requirements