Description
The Danfoss 068Z3421 is a thermostatic expansion valve (TXV) engineered for reliable, precise refrigerant metering in commercial refrigeration systems operating on R404A and R507 refrigerants. Featuring a 3/8″ inlet connection and a 1/2″ outlet connection, this valve incorporates an external equalizer port to accurately sense evaporator outlet pressure — a critical advantage in systems with multi-circuit evaporators or those with significant pressure drop across the evaporator coil. By referencing true evaporator outlet pressure rather than inlet pressure, the external equalizer design delivers tighter superheat control, improved system efficiency, and more stable operation across varying load conditions.
Danfoss TXVs are globally recognized for their precision engineering, consistent performance, and long service life in demanding refrigeration environments. The 068Z3421 is an ideal choice for walk-in coolers, display cases, reach-in refrigerators, and other commercial refrigeration applications where R404A or R507 refrigerant circuits require dependable expansion control.
Key Features
- Thermostatic expansion valve (TXV) with external equalizer for accurate superheat control
- Compatible with R404A and R507 refrigerants
- 3/8″ inlet x 1/2″ outlet connection sizes
- External equalizer port compensates for evaporator pressure drop, improving stability
- Precision-engineered for consistent performance in commercial refrigeration applications
- Durable Danfoss construction for long service life in demanding environments
Typical Applications
- Walk-in coolers and freezers
- Commercial display cases and reach-in refrigerators
- Multi-circuit evaporator systems using R404A or R507
- Supermarket and food service refrigeration equipment
Specifications
- SKU: 068Z3421
- Brand: Danfoss
- Valve Type: Thermostatic Expansion Valve (TXV)
- Equalizer Type: External
- Inlet Connection: 3/8″
- Outlet Connection: 1/2″
- Compatible Refrigerants: R404A, R507
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