
Trane VAL2979 TXV
The Trane VAL2979 TXV is a critical fluid-metering component engineered to maintain precise superheat control in 4-ton HVAC residential air conditioning and heat pump systems. Designed for high-reliability applications, this thermostatic expansion valve features 1/2-inch ODF inlet and outlet connections, facilitating a robust sweat-fit installation for professional technicians. By modulating refrigerant flow into the evaporator coil, this OEM replacement valve protects the compressor from liquid slugging while maximizing thermal efficiency across varying load conditions. For contractors, the VAL2979 ensures system stability and reduces troubleshooting time by providing consistent feedback through its sensing bulb and capillary tube assembly. This Trane replacement part is essential for restoring factory-standard performance in units requiring an exact 4-ton cooling capacity. Integrating this balanced-port TXV into your repair protocol ensures optimal refrigeration cycle performance and long-term system reliability.
Key Benefits- Precise Mass Flow Regulation: Ensures accurate refrigerant metering to prevent evaporator freezing and compressor floodback.
- OEM Compatibility: Genuine Trane VAL2979 design ensures direct-fit replacement for 4-ton AC units without needing manifold modifications.
- Durable Brazed Connections: The 1/2-inch x 1/2-inch ODF sweat ports provide a leak-resistant seal capable of withstanding high system pressures.
- Enhanced System Efficiency: Maintains ideal superheat levels, directly improving SEER ratings and cooling output for the end-user.
- Can I use this TXV for R-22 or R-410A systems? Compatibility depends on the specific power element charge; most VAL2979 applications are tailored for standard high-pressure refrigerants used in 4-ton Trane systems. Always verify the refrigerant type on the valve body.
- Where should the sensing bulb be mounted? For optimal 4-ton performance, mount the bulb on a horizontal suction line at the 10 o'clock or 2 o'clock position, upstream of the external equalizer connection.
- Does this valve require an external equalizer line? Yes, this thermostatic expansion valve is designed to monitor evaporator pressure drop via an external equalizer to ensure accurate pressure-temperature balance.
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.
Trane VAL2979 TXV
The Trane VAL2979 TXV is a critical fluid-metering component engineered to maintain precise superheat control in 4-ton HVAC residential air conditioning and heat pump systems. Designed for high-reliability applications, this thermostatic expansion valve features 1/2-inch ODF inlet and outlet connections, facilitating a robust sweat-fit installation for professional technicians. By modulating refrigerant flow into the evaporator coil, this OEM replacement valve protects the compressor from liquid slugging while maximizing thermal efficiency across varying load conditions. For contractors, the VAL2979 ensures system stability and reduces troubleshooting time by providing consistent feedback through its sensing bulb and capillary tube assembly. This Trane replacement part is essential for restoring factory-standard performance in units requiring an exact 4-ton cooling capacity. Integrating this balanced-port TXV into your repair protocol ensures optimal refrigeration cycle performance and long-term system reliability.
Key Benefits- Precise Mass Flow Regulation: Ensures accurate refrigerant metering to prevent evaporator freezing and compressor floodback.
- OEM Compatibility: Genuine Trane VAL2979 design ensures direct-fit replacement for 4-ton AC units without needing manifold modifications.
- Durable Brazed Connections: The 1/2-inch x 1/2-inch ODF sweat ports provide a leak-resistant seal capable of withstanding high system pressures.
- Enhanced System Efficiency: Maintains ideal superheat levels, directly improving SEER ratings and cooling output for the end-user.
- Can I use this TXV for R-22 or R-410A systems? Compatibility depends on the specific power element charge; most VAL2979 applications are tailored for standard high-pressure refrigerants used in 4-ton Trane systems. Always verify the refrigerant type on the valve body.
- Where should the sensing bulb be mounted? For optimal 4-ton performance, mount the bulb on a horizontal suction line at the 10 o'clock or 2 o'clock position, upstream of the external equalizer connection.
- Does this valve require an external equalizer line? Yes, this thermostatic expansion valve is designed to monitor evaporator pressure drop via an external equalizer to ensure accurate pressure-temperature balance.
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 Trane VAL2979 TXV is a critical fluid-metering component engineered to maintain precise superheat control in 4-ton HVAC residential air conditioning and heat pump systems. Designed for high-reliability applications, this thermostatic expansion valve features 1/2-inch ODF inlet and outlet connections, facilitating a robust sweat-fit installation for professional technicians. By modulating refrigerant flow into the evaporator coil, this OEM replacement valve protects the compressor from liquid slugging while maximizing thermal efficiency across varying load conditions. For contractors, the VAL2979 ensures system stability and reduces troubleshooting time by providing consistent feedback through its sensing bulb and capillary tube assembly. This Trane replacement part is essential for restoring factory-standard performance in units requiring an exact 4-ton cooling capacity. Integrating this balanced-port TXV into your repair protocol ensures optimal refrigeration cycle performance and long-term system reliability.
Key Benefits- Precise Mass Flow Regulation: Ensures accurate refrigerant metering to prevent evaporator freezing and compressor floodback.
- OEM Compatibility: Genuine Trane VAL2979 design ensures direct-fit replacement for 4-ton AC units without needing manifold modifications.
- Durable Brazed Connections: The 1/2-inch x 1/2-inch ODF sweat ports provide a leak-resistant seal capable of withstanding high system pressures.
- Enhanced System Efficiency: Maintains ideal superheat levels, directly improving SEER ratings and cooling output for the end-user.
- Can I use this TXV for R-22 or R-410A systems? Compatibility depends on the specific power element charge; most VAL2979 applications are tailored for standard high-pressure refrigerants used in 4-ton Trane systems. Always verify the refrigerant type on the valve body.
- Where should the sensing bulb be mounted? For optimal 4-ton performance, mount the bulb on a horizontal suction line at the 10 o'clock or 2 o'clock position, upstream of the external equalizer connection.
- Does this valve require an external equalizer line? Yes, this thermostatic expansion valve is designed to monitor evaporator pressure drop via an external equalizer to ensure accurate pressure-temperature balance.
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.












