Description
The Copeland 066663 is a precision-engineered Thermal Expansion Valve (TXV) designed for use with R410A refrigerant systems rated at 4-ton capacity. Built for reliable refrigerant metering in demanding HVAC applications, this externally equalized valve ensures accurate superheat control regardless of evaporator pressure drop — making it an ideal choice for longer evaporator circuits and high-efficiency systems.
Key Features
- Refrigerant: R410A compatible
- Capacity: 4 Ton
- Body Style: Straight body configuration
- Equalization: Externally equalized for precise superheat control across evaporator pressure drop
- Capillary Tube: 5-foot capillary tube for flexible remote bulb placement
- Inlet Connection: 3/8″ sweat (ODF)
- Outlet Connection: 1/2″ sweat (ODF)
- Included Adapters: Chatleff adapter and Aeroquip adapter for versatile installation options
Why Choose an Externally Equalized TXV?
Externally equalized TXVs reference downstream evaporator pressure directly at the outlet, compensating for pressure drop across the evaporator coil. This design delivers more consistent superheat control compared to internally equalized valves — especially critical in multi-circuit evaporators and systems with significant refrigerant-side pressure drop.
Adapter Compatibility
- Chatleff adapter included for compatibility with standard service port fittings
- Aeroquip adapter included for quick-connect refrigeration line applications
Typical Applications
- Residential and light commercial split-system air conditioners
- Heat pump systems using R410A refrigerant
- Replacement TXV installations requiring 4-ton metering capacity
- Systems requiring remote bulb placement with extended capillary reach
Order the Copeland 066663 from Jackson Systems for reliable delivery and expert HVAC supply support.
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