Four Seasons 39487 A/C Expansion Valve

Reliable Four Seasons Expansion Valve for Automotive A/C Systems

The Four Seasons Expansion Valve 39487 is engineered to regulate refrigerant flow in automotive air conditioning systems using R134a refrigerant. Designed with durable aluminum construction and precise fitting specifications, this block-type expansion valve ensures consistent A/C performance for various vehicle makes and models.

• Constructed from corrosion-resistant aluminum for durability
• 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 fit and function

Four Seasons Expansion Valve Product Line Overview

The Expansion Valve product line by Four Seasons focuses on delivering precise refrigerant flow control components for automotive HVAC systems. The 39487 model exemplifies this line by offering a block-type valve without a solenoid, designed to maintain optimal pressure and temperature balance within the A/C system. This product line is tailored to meet OEM standards, ensuring compatibility and performance across a range of vehicle applications.

Detailed Product Description and Specifications

The Four Seasons Expansion Valve 39487 features a block-type design constructed from aluminum, providing strength and resistance to corrosion. It is designed for use with R134a refrigerant, the standard in modern automotive air conditioning systems. The valve includes two mounting holes for secure attachment and female fittings on both suction and liquid inlet/outlet ports. Thread diameters and types are precisely specified: suction inlet and outlet fittings use No. 10 and No. 12 thread diameters respectively, both with 7/8" - 18 thread type. Liquid inlet and outlet fittings have No. 6 and No. 8 thread diameters with 5/8 - 18 and 3/4" - 18 thread types respectively. Both liquid inlet and outlet connections utilize O-ring seals to ensure leak-free operation. The valve’s liquid inlet size measures 0.41 inches (10.5 mm), and the liquid outlet size is 0.54 inches (13.6 mm), while suction inlet and outlet sizes are both 0.65 inches (16.4 mm).

Common Applications and Issues Addressed

• Regulates refrigerant flow to maintain proper evaporator pressure
• Prevents compressor damage caused by improper refrigerant metering
• Helps resolve inconsistent cabin cooling or fluctuating A/C temperatures
• Addresses issues related to refrigerant overfeeding or starvation
• Supports efficient operation of R134a automotive air conditioning 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 O-ring seals are properly seated to prevent refrigerant leaks. This expansion valve is designed without a solenoid, so verify system requirements accordingly. Professional installation is recommended to maintain system integrity and performance.

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39487 meets or exceeds OEM specifications, ensuring reliable fit and function in compatible vehicles. Manufactured with high-quality aluminum and precision engineering, this valve supports long-term durability in automotive HVAC systems. Warranty details should be confirmed with the product supplier or manufacturer.