Trane VAL8708 3/8" x 1/2" 4 Ton R22 Thermostatic Expansion Valve

The Trane VAL8708 is a thermostatic expansion valve (TXV) designed for R22 refrigerant systems with a 4-ton capacity. This precision metering device regulates refrigerant flow into the evaporator coil, maintaining optimal superheat levels for efficient system performance and preventing liquid refrigerant from entering the compressor.

Key Specifications:

• Refrigerant type: R22
• Capacity: 4 tons (48,000 BTU/hr)
• Inlet connection: 3/8" ODF (flare)
• Outlet connection: 1/2" ODF (flare)
• OEM Trane replacement part
• Equipped with internal or external equalizer for accurate pressure sensing

Features & Benefits:

• Precision refrigerant metering improves system efficiency and reliability
• Maintains proper superheat to protect compressor from liquid slugging
• Factory-calibrated for consistent performance
• Durable brass construction for long service life
• Direct OEM replacement for Trane air conditioning and heat pump systems

This expansion valve is commonly used in residential and light commercial HVAC applications. Professional installation by a certified HVAC technician is required, including proper brazing techniques and system evacuation procedures.