Four Seasons 39423 A/C Expansion Valve

Reliable Four Seasons Expansion Valve for Automotive A/C Systems

The Four Seasons Expansion Valve 39423 is engineered to regulate refrigerant flow in automotive air conditioning systems using R134a refrigerant. Designed with durable aluminum construction and a gold finish, this block-type valve ensures consistent performance and compatibility with various vehicle makes and models.

• Constructed from high-quality aluminum with a corrosion-resistant gold color
• Compatible with R134a refrigerant systems
• Block type design with two mounting holes for secure installation
• Female suction and liquid inlet/outlet fittings with No. 10, No. 8, and No. 6 thread diameters
• Sealing washer style and type fittings for reliable leak prevention
• Meets or exceeds OEM specifications for dependable operation
• Designed without a solenoid and does not include a switch
• Super heat rating of 3.5 and 1.5 tonnage capacity

About the Four Seasons Expansion Valve Product Line

The Expansion Valve product line from Four Seasons focuses on precise refrigerant flow control components for automotive HVAC systems. This line is designed to meet or exceed original equipment manufacturer standards, providing reliable temperature regulation and system efficiency. The 39423 valve exemplifies this line’s commitment to quality and fitment accuracy for vehicles requiring R134a refrigerant.

Detailed Product Description and Specifications

The Four Seasons 39423 expansion valve is a block-type A/C flow restrictor made from aluminum, offering durability and resistance to corrosion. It features female suction inlet and outlet fittings with No. 10 thread diameters, and female liquid inlet and outlet fittings with No. 6 and No. 8 thread diameters respectively. All fittings utilize sealing washer styles and types to ensure a secure, leak-free connection. The valve includes two mounting holes for stable attachment within the HVAC system. It is designed for use with R134a refrigerant and has a super heat rating of 3.5, supporting a 1.5-ton cooling capacity. This valve does not include a solenoid or switch, aligning with specific OEM configurations.

Common Applications and Issues Addressed

• Regulates refrigerant flow to maintain optimal A/C system pressure
• Prevents compressor damage caused by improper refrigerant metering
• Helps resolve inconsistent cabin cooling or fluctuating temperatures
• Addresses refrigerant leaks due to worn or damaged expansion valves
• Supports restoration of proper super heat levels in R134a systems

Installation Notes and Tips

Ensure compatibility with your vehicle’s make and model before installation. The valve’s two mounting holes facilitate secure attachment; use appropriate tools to avoid damage to fittings. Confirm that all sealing washers are properly seated to prevent refrigerant leaks. Since this valve does not include a solenoid or switch, verify if your system requires these components separately. Professional installation is recommended to maintain system integrity and performance.

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39423 meets or exceeds OEM standards, ensuring reliable performance and durability. Manufactured with precision aluminum and designed for R134a refrigerant systems, this valve supports consistent HVAC operation. Warranty details should be confirmed with the product documentation or supplier to ensure coverage specifics.