The "C" charge is a medium temperature charge intended for applications where the evaporator temperature remains above -10°F

which allows for precise adjustability and short blowdown

Industrial Durability: Features a corrosion-resistant chrome-plated finish to withstand heavy-duty commercial use

As a Size 4 Type J Sure-Flex Plus flange

Universal Compatibility: Accepts 0-10Vdc

Carrier 331709-752 TXV Replacement 322056-301 The "C" charge is aThe Carrier 331709 752 TXV Replacement Kit is a field proven thermostatic expansion valve designed specifically for 3. 5 to 4 ton evaporator coils. Engineered for R 22 refrigerant systems, this hard shut off TXV modulates flow based on the technical cooling load, preventing liquid slugging to the compressor while maintaining precise superheat control. As a Factory Authorized Part, it serves as a drop in replacement for legacy ICP and Carrier part