Nordyne 920673A TXV

The Nordyne 920673A TXV is a critical metered flow component designed specifically for TR6 R410A 5-ton air conditioning and heat pump systems. Built to survive the high pressures of modern R410A circuits, this thermostatic expansion valve prevents compressor liquid slugging by maintaining precise superheat at the evaporator outlet. Unlike a basic fixed orifice, the 920673A features a balanced port design that compensates for varying head pressures, making it an essential replacement for commercial and high-capacity residential setups where seasonal efficiency is prioritized. As a technician, you know that a restricted or "hunting" valve kills cooling performance; this OEM-spec 5-ton valve ensures accurate refrigerant regulation to stop evaporator icing and short-cycling. Integrating this HVAC expansion valve into your next service call restores the systemÆs intended SEER rating and protects the scroll compressor from premature failure due to erratic refrigerant flow.

• Precise Superheat Control: Automatically adjusts refrigerant flow to the evaporator to maintain optimal cooling performance across variable load conditions.
• R410A Optimized: Specifically engineered to handle the higher operating pressures of R410A systems without the risk of diaphragm rupture.
• Enhanced System Reliability: Acts as a safeguard for the compressor by ensuring only vapor returns to the suction line, preventing liquid flooding.
• OEM Compatibility: A direct drop-in replacement for the TR6 series, ensuring the mechanical connections and bulb sensitivity match original factory specifications.

Is this TXV compatible with older R22 systems?
No, this valve is calibrated specifically for R410A pressures and flow rates. Using it in an R22 system will lead to severe metering issues and potential system damage.

What are the symptoms of a failing 920673A expansion valve?
Watch for high superheat, frost buildup on the evaporator coil, or inconsistent vent temperatures. These often indicate a valve stuck closed or a lost bulb charge.

Does this valve come with the sensing bulb and capillary tube?
Yes, the Nordyne 920673A includes the integrated power element and sensing bulb required for external equalization on TR6 evaporators.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.