Carrier P540-2456 Totaline Universal Thermostatic Expansion Valve TXV R-22 4.5-6 Ton

The Carrier Totaline P540-2456 is a universal thermostatic expansion valve (TXV/TEV) designed for R-22 refrigerant systems rated at 4.5 to 6 tons. As a direct Totaline universal replacement, this valve is engineered to fit a wide range of residential and light-commercial air conditioning and heat pump equipment, simplifying service and inventory management for HVAC technicians.

The TXV regulates the flow of liquid refrigerant into the evaporator coil based on superheat conditions at the evaporator outlet, ensuring efficient heat exchange and protecting the compressor from liquid slugging across varying load conditions.

Key Features:

• Universal fit — compatible with a broad range of Carrier, Bryant, Payne, and other OEM equipment using R-22 refrigerant
• Balance-ported construction — allows stable operation across a wide range of system pressures and reduced load conditions
• A/C and Heat Pump compatible — features a built-in check valve for use in both cooling-only and heat pump applications
• Externally adjustable superheat — allows field technicians to fine-tune performance without replacing the valve
• Works with copper and aluminum evaporator coils
• Three connection options included — ODF, Chatleff, and Aeroquip fittings in every kit for maximum versatility
• Includes 35" foam insulating tape for professional installation
• Inlet connection: 3/8" | Outlet connection: 1/2"
• Maximum working pressure: 610 PSIG
• UL Recognized

The Carrier Totaline P540-2456 is the go-to universal TXV replacement for R-22 systems in the 4.5–6 ton range, offering flexible connections and cross-reference information to confirm compatibility during installation.