Lennox 13Y19 TXV Valve

May 30, 2021


Welcome to Metate Industrial Supply, your trusted source for premium HVAC products. In this page, we present the Lennox 13Y19 TXV Valve, an essential component for achieving optimal performance in your heating, ventilation, and air conditioning (HVAC) system. Read on to discover the detailed specifications, benefits, and installation instructions for this high-end valve.

Detailed Specifications

The Lennox 13Y19 TXV Valve is designed to meet the highest industry standards and is compatible with a wide range of HVAC systems. Here are the key specifications:

  • Model Number: 13Y19
  • Material: Durable brass construction
  • Connection Type: Sweat
  • Valve Type: Thermostatic Expansion Valve (TXV)
  • Compatible Refrigerants: R-410A, R-22
  • Maximum Operating Pressure: 500 PSI
  • Adjustable Superheat Range: 5 to 35°F
  • Operating Temperature Range: -40 to 248°F

Benefits of Lennox 13Y19 TXV Valve

The Lennox 13Y19 TXV Valve offers numerous benefits that contribute to the overall performance and energy efficiency of your HVAC system:

  • Enhanced Cooling Efficiency: This TXV valve assists in maintaining optimum cooling performance by regulating the flow of refrigerant into the evaporator coil.
  • Improved System Durability: With its durable brass construction, the Lennox 13Y19 TXV Valve ensures long-lasting reliability and protection against corrosion.
  • Reduced Energy Consumption: By maintaining accurate and consistent superheat levels, the valve helps optimize energy usage, resulting in potential energy savings.
  • Precise Temperature Control: The adjustable superheat range allows for fine-tuning the valve's performance to suit your specific HVAC system requirements, ensuring precise temperature control.
  • Wide Compatibility: The Lennox 13Y19 TXV Valve is compatible with popular refrigerants, including R-410A and R-22, making it suitable for various HVAC setups.

Installation Instructions

Installing the Lennox 13Y19 TXV Valve is a straightforward process, but it is recommended to be carried out by a qualified HVAC technician. Here are the general steps:

  1. Turn off the power to your HVAC system.
  2. Locate the existing TXV valve and identify the suction line and liquid line.
  3. Remove the existing valve, ensuring all refrigerant has been properly evacuated.
  4. Clean the connections on the lines and apply a suitable flux.
  5. Solder the new Lennox 13Y19 TXV Valve into place, ensuring proper alignment.
  6. Pressure test the system to check for any leaks.
  7. Vacuum the system to remove any air or moisture.
  8. Once the installation is complete, turn the power back on and test the system for proper operation.

While these are general installation steps, it is crucial to refer to the manufacturer's instructions for your specific HVAC system and consult a professional if needed.


In summary, the Lennox 13Y19 TXV Valve from Metate Industrial Supply is an excellent choice for maximizing the performance and energy efficiency of your HVAC system. With its durable construction, wide compatibility, and precise temperature control, this valve ensures optimal cooling and reliable operation. Take advantage of our high-quality product and expert assistance to enhance your HVAC system's performance. Order your Lennox 13Y19 TXV Valve today and experience the difference in your HVAC system's performance and energy efficiency!

Hugh Osteen
Looks great!
Oct 8, 2023