Description
Overview
The Copeland 066154 (Model TFES 20 ZAA 7/8 X 1 1/8 ODF S/T) is a heavy-duty Thermal Expansion Valve (TXV) engineered for large-capacity commercial refrigeration and air conditioning systems operating on R410A refrigerant. With a 20-ton capacity rating and a wide-range charge, this valve delivers precise refrigerant metering across a broad range of operating conditions, making it an ideal choice for demanding commercial and industrial HVAC applications.
Key Features
- 20-ton R410A capacity rating for large commercial systems
- 7/8″ inlet x 1-1/8″ outlet ODF sweat connections for secure, leak-free installation
- Straight body configuration for straightforward inline piping
- 10-foot capillary tube for flexible remote bulb placement
- Wide-range charge design for consistent performance across varying load conditions
- Externally equalized for accurate superheat control in systems with higher pressure drops across the evaporator
- Designed specifically for R410A refrigerant compatibility
Technical Specifications
- SKU / Part Number: 066154
- Model: TFES 20 ZAA 7/8 X 1 1/8 ODF S/T
- Brand: Copeland
- Refrigerant: R410A
- Capacity: 20 Ton
- Inlet Connection: 7/8″ ODF Sweat
- Outlet Connection: 1-1/8″ ODF Sweat
- Body Style: Straight
- Capillary Tube Length: 10 Feet
- Charge Type: Wide Range
- Equalization: External
- Connection Type: Sweat (S/T)
Application
This externally equalized TXV is ideal for use in large commercial air conditioning and refrigeration systems where evaporator pressure drop is significant. The external equalizer port ensures the valve responds to true evaporator outlet pressure, maintaining optimal superheat and system efficiency. The wide-range charge allows the valve to maintain stable operation across a broad range of evaporating temperatures, reducing the need for frequent field adjustments.
Why Choose the Copeland 066154?
Copeland is a globally recognized leader in refrigeration and HVAC components. This TXV is built to Copeland’s exacting standards for reliability and performance, ensuring long service life and consistent refrigerant control in high-capacity systems. Whether you’re servicing a large rooftop unit, chiller, or commercial refrigeration rack, the 066154 delivers the precision metering your system demands.
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