Description
The Nordyne 669821 is an OEM thermostatic expansion valve (TXV) engineered for use with R410A refrigerant systems rated at 4 tons of cooling capacity. Designed as a direct replacement for compatible Nordyne, Gibson, Frigidaire, Westinghouse, and Tappan split-system air conditioners and heat pumps, this TXV precisely meters refrigerant flow into the evaporator coil, maintaining optimal superheat and maximizing system efficiency across a wide range of operating conditions.
A properly functioning TXV is critical to system performance — it responds dynamically to changes in load and refrigerant conditions, preventing both flooding and starving of the evaporator. Replacing a failed or undersized metering device with this genuine Nordyne TXV restores factory-specified performance and protects the compressor from liquid slugging.
Key Features
- OEM Nordyne replacement TXV for R410A systems
- Rated for 4-ton (48,000 BTU/hr) cooling capacity
- Compatible with R410A refrigerant
- Provides precise superheat control for optimized efficiency
- Direct OEM replacement — no field modifications required
- Designed for use in split-system air conditioners and heat pumps
- Protects compressor by preventing liquid refrigerant floodback
Compatible Brands
- Nordyne
- Gibson
- Frigidaire (HVAC)
- Westinghouse (HVAC)
- Tappan (HVAC)
Specifications
- Part Number: 669821
- Refrigerant Type: R410A
- System Capacity: 4 Ton (48,000 BTU/hr)
- Valve Type: Thermostatic Expansion Valve (TXV)
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