Four Seasons 39422 A/C Expansion Valve

Four Seasons 39422 Expansion Valve

Four Seasons 39422 is a block-type A/C expansion valve for R134A systems. Built from aluminum with female O-ring connections, it is specified for 2.000 ton applications and a 4.0 superheat setting. This Four Seasons Expansion Valve is a direct-fit HVAC flow restrictor for service work where precise refrigerant metering is required.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39422
• Block type A/C expansion valve
• Aluminum construction and aluminum finish
• R134A refrigerant type
• Female insert O-ring inlet and outlet connections
• Liquid inlet: No. 6, 5/8"-18 thread
• Liquid outlet: No. 8, 3/4"-18 thread
• Suction inlet: No. 8, 7/8"-18 thread
• Suction outlet: No. 10, 7/8"-18 thread
• Meets or exceeds OEM requirements
• Style: w/o solenoid

Product Details

The Four Seasons 39422 expansion valve regulates refrigerant flow into the evaporator so the A/C system can maintain proper cooling performance. Its block-style design, aluminum body, and O-ring female fittings support service replacement in R134A-equipped systems that use the listed port sizes and thread specifications. This part cross-references FEL-PRO 1644 for the same application. For buyers searching for a Four Seasons 39422 expansion valve, this unit is a technical match for HVAC repair where the original valve has restricted flow, inconsistent superheat, or poor cooling output. It is also a relevant replacement for vehicle-specific searches such as Honda Civic A/C expansion valve and Toyota Camry HVAC expansion valve when the application calls for this exact configuration.

Common Problems It Can Address

• Weak cabin cooling from incorrect refrigerant metering
• Evaporator performance issues caused by a sticking valve
• Uneven vent temperatures in an R134A A/C system
• Pressure imbalance related to a worn expansion valve
• Service replacement for a leaking or damaged O-ring style valve

Installation Notes

Verify the original valve style, refrigerant type, and port/thread dimensions before installation. Confirm the system uses R134A and matches the listed liquid and suction inlet/outlet sizes, including the female insert O-ring connections. Replace seals and evacuate the system according to standard A/C service procedures after installation. For fitment-based searches, confirm the vehicle application before ordering; this part is commonly searched for Honda Civic and Toyota Camry A/C repair, but the exact vehicle match must follow the listed system specifications.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. Part number 39422 is built for service replacement in properly matched A/C systems and is identified under Four Seasons Expansion Valve product line coverage.