Four Seasons 39618 A/C Expansion Valve - Front

Overview of Four Seasons Expansion Valve 39618

The Four Seasons Expansion Valve 39618 is designed specifically for Volkswagen models including the Atlas, Atlas Cross Sport, and Tiguan. This A/C expansion valve helps regulate refrigerant flow in your vehicle's HVAC system, ensuring efficient cooling performance with R134a refrigerant.

• Constructed from durable aluminum material
• 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
• Meets or exceeds OEM specifications for reliable performance
• Designed without a solenoid for straightforward operation
• Super heat rating of 2.500 and 1.000 tonnage capacity

Four Seasons Expansion Valve Product Line Details

The Four Seasons Expansion Valve product line focuses on providing precise refrigerant flow control components for automotive HVAC systems. The Expansion Valve 39618 is part of this line, offering a block type valve that integrates seamlessly with Volkswagen HVAC systems. This product line emphasizes OEM compatibility and durable materials like aluminum to maintain system integrity and performance.

Technical Description and Features

This A/C expansion valve features a block type design constructed from aluminum, ensuring corrosion resistance and longevity. It is engineered for use with R134a refrigerant, common in modern Volkswagen vehicles. The valve includes two mounting holes for secure attachment and female fittings on both suction and liquid inlet/outlet ports, all sealed with O-rings to prevent leaks. Thread diameters vary by port, including No. 10 and No. 12 for suction fittings and No. 6 and No. 8 for liquid fittings, matching OEM specifications. The valve operates without a solenoid and provides a super heat value of 2.500, suitable for 1.000 tonnage HVAC systems.

Common Applications and Problem Solving

• Regulates refrigerant flow in Volkswagen Atlas, Atlas Cross Sport, and Tiguan A/C systems
• Prevents inefficient cooling caused by faulty or worn expansion valves
• Addresses issues with inconsistent cabin temperature control
• Helps eliminate refrigerant leaks due to worn fittings or seals
• Supports proper super heat levels to protect compressor and system components

Installation Notes and Tips

When installing the Four Seasons Expansion Valve 39618, ensure the vehicle is compatible with R134a refrigerant systems. Use proper tools to avoid damaging the aluminum body or fittings. Verify that O-ring seals are correctly seated to prevent leaks. Tighten mounting bolts securely using the two provided holes. It is recommended to evacuate and recharge the A/C system after installation to maintain optimal performance.

Quality Assurance and Warranty

This expansion valve meets or exceeds OEM standards for fit, form, and function, ensuring reliable operation in Volkswagen Atlas, Atlas Cross Sport, and Tiguan models. Four Seasons products typically come with a limited warranty covering defects in material and workmanship. Refer to the product packaging or manufacturer documentation for specific warranty details.