Factory Authorized Parts Carrier 331709-789 Thermostatic Expansion Valve (TXV)


Improve your HVAC system’s cooling efficiency and reliability with the Carrier 331709 789 Kit TXV. Designed as a direct OEM replacement for Carrier, Bryant, and Payne equipment, this thermostatic expansion valve (TXV) kit is engineered for 3–3.5 ton systems operating with R 410A refrigerant and features a 3/8″ × ½″ hex nut connection.
  • Genuine factory authorized performance: Maintains system integrity and warranty compliance by matching original equipment specifications.
  • Precise refrigeration control: Improves evaporator performance by accurately metering refrigerant flow to maintain optimal superheat and system efficiency.
  • Perfect fit for 3–3.5 ton R 410A systems: Designed to replace previous part numbers 331709 772, 1185501, and 331709 798.
  • Reliable build: Includes all required components in the kit for streamlined installation and dependable operation.
  • Approvals: CSA Listed
  • Brand: Factory Authorized Parts
  • Composition: Bi-Metal
  • Refrigerant: R-410A


Condition is brand new.

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