
Lennox 38M74 TXV
The Lennox 38M74 Thermal Expansion Valve (TXV) is a critical refrigeration metering component designed for high-capacity 6-ton R-410A systems. Engineered for precise superheat control, this OEM Lennox TXV features an inlet and outlet configuration of 3/8" x 1/2" ODF (Sweat) connections, facilitating a secure, leak-free integration into the liquid line. The included 30-inch capillary tube and sensing bulb allow for responsive modulation of refrigerant flow based on evaporator load, preventing liquid slugging and ensuring the compressor operates within safe parameters. For contractors performing HVAC TXV replacement, this valve is a direct-fit solution for maintaining peak system efficiency in large-scale residential or light commercial split systems. Its robust construction is specifically tailored to handle the high-pressure demands of R-410A refrigerant, providing stable cooling performance and reliable evaporator coil management under varying thermal conditions.
Key Benefits:- Precise Refrigerant Metering: Automatically adjusts flow to maintain optimal superheat, protecting the compressor from damage.
- High-Capacity 6-Ton Rating: Sized specifically for large-tonnage Lennox air conditioning and heat pump applications.
- OEM Compatibility: Genuine Lennox 38M74 ensures exact physical dimensions and calibration for professional repairs.
- Durable ODF Connections: 3/8" x 1/2" solder connections provide the structural integrity required for high-pressure R-410A lines.
- Extended Capillary Reach: The 30" capillary tube offers installation flexibility for various coil header configurations.
- What are the symptoms of a failing Lennox 38M74 TXV? Technicians typically observe high superheat, low suction pressure, and potentially frozen evaporator coils when the valve is stuck closed or restricted.
- Is this valve compatible with refrigerants other than R-410A? No, the Lennox 38M74 is calibrated specifically for the pressure-temperature characteristics of R-410A.
- Does this TXV include the sensing bulb mounting hardware? Yes, the assembly typically includes the necessary hardware to securely strap the sensing bulb to the suction line for accurate temperature sensing.
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.
Lennox 38M74 TXV
The Lennox 38M74 Thermal Expansion Valve (TXV) is a critical refrigeration metering component designed for high-capacity 6-ton R-410A systems. Engineered for precise superheat control, this OEM Lennox TXV features an inlet and outlet configuration of 3/8" x 1/2" ODF (Sweat) connections, facilitating a secure, leak-free integration into the liquid line. The included 30-inch capillary tube and sensing bulb allow for responsive modulation of refrigerant flow based on evaporator load, preventing liquid slugging and ensuring the compressor operates within safe parameters. For contractors performing HVAC TXV replacement, this valve is a direct-fit solution for maintaining peak system efficiency in large-scale residential or light commercial split systems. Its robust construction is specifically tailored to handle the high-pressure demands of R-410A refrigerant, providing stable cooling performance and reliable evaporator coil management under varying thermal conditions.
Key Benefits:- Precise Refrigerant Metering: Automatically adjusts flow to maintain optimal superheat, protecting the compressor from damage.
- High-Capacity 6-Ton Rating: Sized specifically for large-tonnage Lennox air conditioning and heat pump applications.
- OEM Compatibility: Genuine Lennox 38M74 ensures exact physical dimensions and calibration for professional repairs.
- Durable ODF Connections: 3/8" x 1/2" solder connections provide the structural integrity required for high-pressure R-410A lines.
- Extended Capillary Reach: The 30" capillary tube offers installation flexibility for various coil header configurations.
- What are the symptoms of a failing Lennox 38M74 TXV? Technicians typically observe high superheat, low suction pressure, and potentially frozen evaporator coils when the valve is stuck closed or restricted.
- Is this valve compatible with refrigerants other than R-410A? No, the Lennox 38M74 is calibrated specifically for the pressure-temperature characteristics of R-410A.
- Does this TXV include the sensing bulb mounting hardware? Yes, the assembly typically includes the necessary hardware to securely strap the sensing bulb to the suction line for accurate temperature sensing.
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.
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Description
The Lennox 38M74 Thermal Expansion Valve (TXV) is a critical refrigeration metering component designed for high-capacity 6-ton R-410A systems. Engineered for precise superheat control, this OEM Lennox TXV features an inlet and outlet configuration of 3/8" x 1/2" ODF (Sweat) connections, facilitating a secure, leak-free integration into the liquid line. The included 30-inch capillary tube and sensing bulb allow for responsive modulation of refrigerant flow based on evaporator load, preventing liquid slugging and ensuring the compressor operates within safe parameters. For contractors performing HVAC TXV replacement, this valve is a direct-fit solution for maintaining peak system efficiency in large-scale residential or light commercial split systems. Its robust construction is specifically tailored to handle the high-pressure demands of R-410A refrigerant, providing stable cooling performance and reliable evaporator coil management under varying thermal conditions.
Key Benefits:- Precise Refrigerant Metering: Automatically adjusts flow to maintain optimal superheat, protecting the compressor from damage.
- High-Capacity 6-Ton Rating: Sized specifically for large-tonnage Lennox air conditioning and heat pump applications.
- OEM Compatibility: Genuine Lennox 38M74 ensures exact physical dimensions and calibration for professional repairs.
- Durable ODF Connections: 3/8" x 1/2" solder connections provide the structural integrity required for high-pressure R-410A lines.
- Extended Capillary Reach: The 30" capillary tube offers installation flexibility for various coil header configurations.
- What are the symptoms of a failing Lennox 38M74 TXV? Technicians typically observe high superheat, low suction pressure, and potentially frozen evaporator coils when the valve is stuck closed or restricted.
- Is this valve compatible with refrigerants other than R-410A? No, the Lennox 38M74 is calibrated specifically for the pressure-temperature characteristics of R-410A.
- Does this TXV include the sensing bulb mounting hardware? Yes, the assembly typically includes the necessary hardware to securely strap the sensing bulb to the suction line for accurate temperature sensing.
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.












