Description
Copeland 055878 Low Temperature Externally Equalized Thermal Expansion Valve (TXV)
The Copeland 055878 (model HFES 1 1/2 RZ 5FT 3/8×1/2 ODF S/T) is a precision-engineered, externally equalized thermal expansion valve designed for reliable refrigerant metering in low-temperature refrigeration applications. Built to handle today’s most common low-GWP and legacy refrigerants, this TXV delivers consistent superheat control and system efficiency in demanding commercial refrigeration environments.
Key Features
- Externally equalized design for accurate superheat control across varying load conditions
- Low temperature charge optimized for freezer and low-temp refrigeration systems
- 3/8″ inlet x 1/2″ outlet sweat (ODF) connections for straightforward field installation
- 5-foot capillary tube provides flexible bulb placement and routing
- Compatible with multiple refrigerants: R507, R502, R404A, R448A, and R449A
- 1-1/2 ton capacity rating suitable for light commercial and refrigeration applications
- Durable construction engineered to Copeland’s exacting quality standards
Refrigerant Compatibility
- R404A – widely used HFC blend for low and medium temperature refrigeration
- R507 – azeotropic HFC blend, common in low-temperature freezer applications
- R448A – next-generation low-GWP HFC/HFO blend, R404A retrofit option
- R449A – low-GWP HFC/HFO blend, another R404A/R507 drop-in alternative
- R502 – legacy HCFC blend (backward compatibility)
Specifications
- SKU: 055878
- Model: HFES 1 1/2 RZ 5FT 3/8×1/2 ODF S/T
- Valve Type: Thermal Expansion Valve (TXV)
- Equalization: External
- Charge Type: Low Temperature
- Inlet Connection: 3/8″ ODF Sweat
- Outlet Connection: 1/2″ ODF Sweat
- Capillary Tube Length: 5 feet
- Nominal Capacity: 1-1/2 Ton
- Compatible Refrigerants: R507, R502, R404A, R448A, R449A
Application
Ideal for use in commercial reach-in freezers, walk-in coolers operating at low temperatures, display cases, and other refrigeration systems requiring precise expansion valve control. The externally equalized port connects to the suction line downstream of the evaporator, ensuring accurate superheat sensing even in long evaporator circuits with significant pressure drop.
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