Description
The Nordyne 669683R is an OEM-grade thermostatic expansion valve (TXV) designed specifically for 3-ton R-410A refrigerant systems. Engineered to deliver precise refrigerant metering, this TXV maintains optimal superheat levels across a wide range of operating conditions — protecting the compressor and maximizing system efficiency.
Why Choose the Nordyne 669683R TXV?
As a genuine Nordyne replacement part, the 669683R is built to exact factory specifications, ensuring a reliable drop-in fit for compatible Nordyne, Frigidaire, Gibson, Tappan, and affiliated brand equipment. Upgrading or replacing a worn TXV with this OEM component helps restore original system performance and prevents costly compressor damage caused by liquid slugging or excessive superheat.
Key Features
- OEM Nordyne replacement thermostatic expansion valve
- Rated for 3-ton (36,000 BTU/hr) system capacity
- Compatible with R-410A refrigerant
- Engineered for precise superheat control and refrigerant metering
- Direct factory-spec replacement for compatible Nordyne equipment
- Helps protect compressor from liquid slugging and overheating
- Supports peak system efficiency and comfort performance
Application
The 669683R TXV is intended for use in residential and light commercial split-system air conditioning and heat pump applications using R-410A refrigerant at a 3-ton capacity. Always verify compatibility with your specific equipment model before installation.
Installation Notes
- Recommended for installation by a licensed HVAC technician
- Ensure system is properly recovered and evacuated before replacement
- Verify bulb placement and orientation per manufacturer guidelines for accurate superheat sensing
- Confirm equipment model compatibility prior to ordering







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