Lennox 64W49 Thermostatic Expansion Valve 3/8" x 1/2" ODF 4 Ton

The Lennox 64W49 thermostatic expansion valve (TXV) is a precision-engineered component designed to regulate refrigerant flow in residential and commercial HVAC systems. This valve automatically adjusts refrigerant delivery to the evaporator coil, maintaining optimal superheat levels for maximum system efficiency and reliable cooling performance.

Key Specifications:

• Inlet Connection: 3/8" ODF (Outside Diameter Flare)
• Outlet Connection: 1/2" ODF
• Capacity Rating: 4 Ton
• Capillary Tube Length: 30 inches
• Operating Pressure: 94 ±2 PSIG
• OEM Part Number: 100679-38

Features and Benefits:

• Precise refrigerant metering ensures efficient heat transfer and prevents compressor flooding
• Maintains proper superheat levels across varying load conditions
• Durable construction for long-lasting performance in demanding applications
• Factory-calibrated for accurate operation right out of the box
• Direct OEM replacement part for Lennox HVAC equipment

This expansion valve is an essential component for maintaining system efficiency and preventing common issues such as evaporator freeze-up or insufficient cooling. The 30-inch capillary tube provides installation flexibility for proper bulb placement on the suction line.