Nordyne Intertherm 669564 Expansion Valve R-410A

Product Description

The NORDYNE INTERTHERM 669564 is a thermostatic expansion valve (TXV) designed for use with R-410A refrigerant in split-system and packaged HVAC equipment. The TXV meters liquid refrigerant into the evaporator coil, maintaining the correct superheat level to protect the compressor and sustain system efficiency. This part is serviced and replaced by licensed HVAC technicians as part of refrigerant-side diagnostics, coil replacement, or system retrofits involving R-410A-compatible equipment.

This expansion valve is suited for residential and light-commercial HVAC systems that operate on R-410A refrigerant. It is a direct OEM replacement for NORDYNE INTERTHERM branded equipment where the original TXV has failed, lost metering control, or developed a refrigerant leak. Technicians typically encounter this valve during high superheat troubleshooting, inefficient cooling calls, or compressor failure investigations where the metering device is identified as the root cause.

Key Features

• Designed for use with R-410A refrigerant systems
• Replaces the original OEM thermostatic expansion valve in NORDYNE INTERTHERM equipment
• Meters refrigerant flow to maintain proper evaporator superheat
• OEM replacement part ensuring correct fit and function without field modification

Compatibility

Designed as an OEM-style replacement thermostatic expansion valve for NORDYNE INTERTHERM R-410A split-system and packaged HVAC equipment.

Installation Notes

Installation must be performed by an EPA Section 608 certified HVAC technician, as this component is part of the sealed refrigerant circuit. The system must be fully recovered and depressurized before removing the existing TXV. Braze or flare connections should be made per manufacturer and local mechanical code requirements. After installation, the system must be evacuated, leak-checked, and recharged to the equipment nameplate specification before returning to service.

Technical Specifications

• Refrigerant Type: R-410A
• Valve Type: Thermostatic Expansion Valve (TXV)

Standard Information

• Brand: NORDYNE INTERTHERM
• Manufacturer Part Number: 669564