Lennox 26K34 Expansion Valve

The Lennox 26K34 Thermal Expansion Valve (TXV) is a critical liquid-metering component designed for R-22 refrigerant systems with a capacity range of 1.5 to 3 tons. Engineered as a high-precision OEM replacement part, this non-bleed port expansion valve features standard Chatleff connections (3/8-inch inlet and 1/2-inch outlet) and an external equalizer to provide accurate superheat control across varying load conditions. For technicians, using this genuine Lennox TXV kit ensures seamless integration with existing evaporator coils, preventing common issues such as evaporator icing or liquid slugging that can lead to compressor failure.

Built for durability in both residential and light commercial air conditioning applications, the 26K34 expansion valve replaces legacy part numbers including 18K23, 49J24, and LB-85663 series. By maintaining the correct pressure drop and refrigerant flow, this thermal expansion valve maximizes heat exchange efficiency and stabilizes system performance. This kit includes the necessary Teflon seal rings and sensing bulb mounting hardware to facilitate a professional-grade installation and ensure a leak-free seal on the liquid line and distributor assembly.

• Precise Superheat Regulation: Maintains optimal evaporator performance to protect the compressor from liquid floodback.
• OEM Compatibility: Exact fit for 1.5, 2, 2.5, and 3-ton Lennox units, eliminating the need for field modifications.
• Enhanced System Efficiency: Optimizes refrigerant flow for more consistent cooling and reduced energy consumption.
• Direct Cross-Reference: Replaces older Lennox and Allied Air part numbers like 18K2301 and 49J26.

• Is this valve compatible with R-410A systems? No, the 26K34 is specifically calibrated for R-22 refrigerant only. Using it with R-410A will result in improper metering and potential system damage.
• Does this TXV have a bleed port? This is a non-bleed port design, which provides better efficiency during the off-cycle by preventing refrigerant migration.
• What connection types does it use? The valve features standard Chatleff mechanical connections, which require Teflon seal rings (included) for a proper seat.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.