Description
Copeland TFES-Series Thermal Expansion Valve — Overview
The Copeland 066147 (Model TFES B 12 ZAA 5FT 5/8X7/8 ODF S/T) is a precision-engineered Thermal Expansion Valve (TXV) purpose-built for R410A refrigerant systems. Designed for 1½-ton capacity applications, this valve delivers consistent, reliable refrigerant metering across a wide range of operating conditions, making it an ideal choice for residential and light-commercial air conditioning and heat pump systems.
Key Features
- TFES-Series straight-body design for straightforward installation and serviceability
- Rated for R410A refrigerant — fully compatible with modern, environmentally preferred systems
- 1½-Ton (12,000 BTU/hr) nominal capacity
- Wide-range charge bulb for stable superheat control across varying load conditions
- Externally equalized design compensates for distributor or evaporator pressure drop, ensuring accurate superheat sensing
- 5-foot capillary tube for flexible bulb placement and remote sensing
- 15% bleed port maintains a minimum flow during low-load or off-cycle conditions, reducing pressure equalization time and improving system restart
- 5/8″ × 7/8″ ODF (sweat) connections for secure, leak-free brazed installation
Product Specifications
- SKU: 066147
- Model: TFES B 12 ZAA 5FT 5/8X7/8 ODF S/T
- Series: TFES
- Body Style: Straight
- Refrigerant: R410A
- Nominal Capacity: 1½ Ton (12,000 BTU/hr)
- Charge Type: Wide Range
- Equalization: External
- Capillary Tube Length: 5 feet
- Inlet Connection: 5/8″ ODF Sweat
- Outlet Connection: 7/8″ ODF Sweat
- Bleed: 15%
- Connection Type: Sweat (Braze)
Application & Installation Notes
The external equalizer port must be connected to the evaporator outlet (suction line) downstream of the bulb location to ensure accurate superheat control. The 5-foot capillary tube provides ample flexibility for proper bulb placement on the suction line. The 15% bleed feature is particularly beneficial in systems where rapid pressure equalization between high and low sides is needed to protect the compressor on startup. Always follow Copeland and system manufacturer guidelines for brazing procedures, refrigerant handling, and superheat adjustment.
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