Lennox 13Y19 TXV Valve

The Lennox 13Y19 TXV Valve provides critical refrigerant metering for high-performance residential and commercial split systems. This 1.5-3 Ton R410 TXV Valve is engineered to maintain precise superheat levels by regulating flow into the evaporator coil, preventing liquid slugging and ensuring the compressor operates within design parameters. As an externally equalized thermostatic expansion valve, the 13Y19 responds dynamically to load variations, optimizing the heat exchange process across a wide range of ambient conditions. It is a direct OEM replacement HVAC valve for many 14HPX and 13HPX series heat pumps, as well as units from Allied, Armstrong, and Ducane. The kit typically includes the Danfoss TR 6 valve body, Teflon washers, and necessary fittings for a secure, leak-free installation. For technicians troubleshooting high superheat or low suction pressure, this Lennox expansion valve kit ensures the system meets its rated SEER efficiency and cooling capacity.

Key Benefits:

• System Efficiency: Maintains exact refrigerant flow to maximize evaporator surface usage and reduce energy consumption.
• Hardware Protection: Prevents liquid refrigerant from returning to the compressor, extending the operational life of the outdoor unit.
• Wide Compatibility: Designed for 1.5 to 3-ton applications, making it a versatile stock item for R-410A service calls.
• Precise Control: Features an external equalization line to accurately sense evaporator pressure, ensuring stable operation under fluctuating loads.

Common Questions:

• How can I tell if the TXV is failing or just restricted by a filter drier? A failed-closed 13Y19 will show high superheat and low suction pressure. Check the temperature drop across the liquid line filter drier first; if it is clear, the valve is likely the point of restriction.
• Does this valve come with the orifice or is it a complete assembly? The 13Y19 is a complete thermostatic expansion valve assembly including the power head, sensing bulb, and mechanical fittings.
• Is this compatible with older R-22 systems? No, this valve is specifically calibrated for the pressure-temperature characteristics of R-410A refrigerant.

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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.