Four Seasons 39638 A/C Expansion Valve

Reliable A/C Expansion Valve for Acura RDX and TLX

The Four Seasons Expansion Valve 39638 is designed to regulate refrigerant flow in your vehicle's air conditioning system. Engineered for Acura RDX and TLX models, this aluminum block-type valve ensures efficient cooling performance with R134a refrigerant compatibility.

Key Features of Four Seasons Expansion Valve 39638

• Constructed from durable aluminum for long-lasting use
• Compatible with R134a refrigerant systems
• Block type design with two mounting holes for secure installation
• Female suction and liquid inlet/outlet fittings with O-ring seals
• Thread diameters: No. 12 for suction fittings, No. 6 and No. 10 for liquid fittings
• Meets or exceeds OEM specifications for reliable performance
• Designed without solenoid and does not include a switch
• Super heat rating of -3.500 for precise temperature control
• Rated for 1.5 tonnage A/C systems

About the Four Seasons Expansion Valve Product Line

The Expansion Valve line by Four Seasons focuses on delivering precise refrigerant flow control components for automotive HVAC systems. This product line emphasizes OEM compatibility and durable materials, such as aluminum, to maintain system efficiency and longevity. The 39638 valve is part of this line, offering a block-type design optimized for Acura RDX and TLX air conditioning systems.

Detailed Product Description

The Four Seasons Expansion Valve 39638 is a critical component in the HVAC system of Acura RDX and TLX vehicles. Its aluminum construction provides corrosion resistance and durability under varying operating conditions. The valve features female suction and liquid inlet/outlet fittings with O-ring seals to ensure leak-free connections. Thread diameters are standardized to No. 12 for suction fittings and No. 6 and No. 10 for liquid fittings, facilitating proper fitment. The block-type design includes two mounting holes for secure attachment. This valve is designed for use with R134a refrigerant and supports a 1.5-ton A/C system capacity. It operates without a solenoid and does not include a switch, simplifying integration into existing HVAC setups. The super heat rating of -3.500 helps maintain optimal refrigerant temperature and pressure balance.

Common Issues Addressed by This Expansion Valve

• Inconsistent or insufficient cooling performance in Acura RDX and TLX A/C systems
• Refrigerant flow irregularities causing compressor strain or failure
• Leaks or poor sealing due to worn or damaged expansion valves
• Reduced HVAC efficiency from OEM valve wear or malfunction
• System pressure imbalances affecting overall air conditioning operation

Installation Notes and Tips

• Ensure compatibility with Acura RDX and TLX models before installation
• Verify refrigerant type is R134a to match valve specifications
• Inspect O-ring seals and fittings for damage or wear prior to installation
• Use proper torque on mounting holes to avoid valve damage
• System evacuation and recharge should be performed by a qualified technician

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39638 meets or exceeds OEM standards, ensuring reliable performance and durability. Manufactured with precision aluminum materials and designed for exact fitment, this valve supports consistent HVAC operation. Warranty details should be confirmed with the product supplier or manufacturer.