Description
Danfoss 068U1973 Externally Equalized Thermostatic Expansion Valve — R410A
The Danfoss 068U1973 is an externally equalized thermostatic expansion valve (TXV) engineered for use with R410A refrigerant. Designed with a 3/8″ inlet connection and a 1/2″ outlet connection, this valve delivers precise refrigerant metering to maintain optimal superheat levels across the evaporator, supporting efficient and reliable system operation in residential and light commercial HVAC applications.
What Is an Externally Equalized TXV?
Unlike internally equalized valves, the Danfoss 068U1973 features external equalization — the equalizer port connects downstream at the evaporator outlet rather than internally at the valve outlet. This design compensates for pressure drop across the evaporator coil, making it the preferred choice for evaporators with multiple refrigerant circuits or higher pressure drops. The result is more accurate superheat control and improved system efficiency.
Key Features
- Externally equalized design for accurate superheat control across high-pressure-drop evaporators
- Compatible with R410A refrigerant
- 3/8″ inlet (liquid line) x 1/2″ outlet (suction side) connection sizes
- Danfoss precision engineering for consistent, long-lasting performance
- Suitable for residential and light commercial split-system air conditioning applications
- Replaces and upgrades aging or failed TXV components
Application
The 068U1973 is ideal for HVAC technicians performing TXV replacements or new installations on R410A systems. Its externally equalized configuration ensures accurate refrigerant flow control even in systems where evaporator pressure drop would otherwise cause hunting or poor superheat regulation. Always verify system capacity, superheat setting, and connection sizing before installation.
Specifications
- Brand: Danfoss
- Part Number / SKU: 068U1973
- Valve Type: Thermostatic Expansion Valve (TXV), Externally Equalized
- Refrigerant: R410A
- Inlet Connection: 3/8″
- Outlet Connection: 1/2″
- Equalization: External
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