Multi-Refrigerant Support: Engineered for stable performance in R-410A

maintaining combustion safety without requiring manual intervention after cooling

Synthetic Seating Design: Provides superior seat tightness and prevents refrigerant migration during the off-cycle

diaphragm screw

Industrial-Grade Durability: Resists degradation from harsh environments and varying temperatures common in heavy-duty HVACR applications

Carrier 331709-789 TXV Kit 320788-703 Multi-Refrigerant Support: Engineered for stableEnsure peak evaporator performance with the Carrier 331709 789 TXV Kit, a factory authorized solution designed for 3 to 3. 5 ton residential and light commercial systems. This OEM thermostatic expansion valve is highly compatible with R410A refrigerant, utilizing an internal check valve to manage liquid flow effectively during cooling cycles. Engineered to replace outdated part numbers like 331709 772 and 1185501, this TXV replacement kit features a 3