
Trane VAL8718 TXV
Precision refrigerant metering is the backbone of system efficiency, and the Trane VAL8718 is engineered to maintain that balance in demanding 4 Ton HVAC systems. As an OEM Trane expansion valve, this thermostatic expansion valve (TXV) is designed specifically for R410A refrigerant applications, ensuring the evaporator coil receives the exact mass flow required to manage superheat effectively. With a 3/8" x 1/2" sweat connection, this valve provides a reliable, leak-resistant mechanical joint that veteran contractors trust for long-term reliability.
The VAL8718 features a balanced port design that compensates for varying head pressures, making it a critical component for maintaining performance during extreme ambient temperature swings. Whether you are performing a TXV replacement on a residential air conditioner or a Trane heat pump, the external equalizer and sensing bulb work in tandem to prevent compressor slugging and evaporator freeze-ups. This genuine Trane replacement part eliminates the guesswork of aftermarket compatibility, fitting seamlessly into Trane and American Standard 4-ton evaporator coils.
Key Benefits- Precise Superheat Control: Automatically adjusts refrigerant flow to protect the compressor from liquid slugging.
- OEM Compatibility: Guaranteed fit for Trane 4-ton cooling systems, ensuring factory-spec performance.
- Balanced Port Construction: Maintains consistent flow regardless of pressure drops across the valve.
- Durable Sweat Fittings: 3/8" inlet and 1/2" outlet ports designed for standard brazing techniques in the field.
- R410A Optimized: Factory-calibrated for the high-pressure characteristics of Puron/R-410A systems.
Is the Trane VAL8718 compatible with R-22 systems?
No, this valve is specifically calibrated for R410A refrigerant. Using it with R-22 will lead to improper metering and potential system failure.
Where should the sensing bulb be mounted?
For optimal performance, mount the bulb on a horizontal run of the suction line at the 10 or 2 o'clock position, ensuring 100% metal-to-metal contact and proper insulation.
Does this TXV include the internal trainer/screen?
Yes, this Trane VAL8718 typically includes the factory-installed screen to protect the needle and seat from debris, though the liquid line filter drier should always be replaced during installation.
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 VAL8718 TXV
Precision refrigerant metering is the backbone of system efficiency, and the Trane VAL8718 is engineered to maintain that balance in demanding 4 Ton HVAC systems. As an OEM Trane expansion valve, this thermostatic expansion valve (TXV) is designed specifically for R410A refrigerant applications, ensuring the evaporator coil receives the exact mass flow required to manage superheat effectively. With a 3/8" x 1/2" sweat connection, this valve provides a reliable, leak-resistant mechanical joint that veteran contractors trust for long-term reliability.
The VAL8718 features a balanced port design that compensates for varying head pressures, making it a critical component for maintaining performance during extreme ambient temperature swings. Whether you are performing a TXV replacement on a residential air conditioner or a Trane heat pump, the external equalizer and sensing bulb work in tandem to prevent compressor slugging and evaporator freeze-ups. This genuine Trane replacement part eliminates the guesswork of aftermarket compatibility, fitting seamlessly into Trane and American Standard 4-ton evaporator coils.
Key Benefits- Precise Superheat Control: Automatically adjusts refrigerant flow to protect the compressor from liquid slugging.
- OEM Compatibility: Guaranteed fit for Trane 4-ton cooling systems, ensuring factory-spec performance.
- Balanced Port Construction: Maintains consistent flow regardless of pressure drops across the valve.
- Durable Sweat Fittings: 3/8" inlet and 1/2" outlet ports designed for standard brazing techniques in the field.
- R410A Optimized: Factory-calibrated for the high-pressure characteristics of Puron/R-410A systems.
Is the Trane VAL8718 compatible with R-22 systems?
No, this valve is specifically calibrated for R410A refrigerant. Using it with R-22 will lead to improper metering and potential system failure.
Where should the sensing bulb be mounted?
For optimal performance, mount the bulb on a horizontal run of the suction line at the 10 or 2 o'clock position, ensuring 100% metal-to-metal contact and proper insulation.
Does this TXV include the internal trainer/screen?
Yes, this Trane VAL8718 typically includes the factory-installed screen to protect the needle and seat from debris, though the liquid line filter drier should always be replaced during installation.
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
Precision refrigerant metering is the backbone of system efficiency, and the Trane VAL8718 is engineered to maintain that balance in demanding 4 Ton HVAC systems. As an OEM Trane expansion valve, this thermostatic expansion valve (TXV) is designed specifically for R410A refrigerant applications, ensuring the evaporator coil receives the exact mass flow required to manage superheat effectively. With a 3/8" x 1/2" sweat connection, this valve provides a reliable, leak-resistant mechanical joint that veteran contractors trust for long-term reliability.
The VAL8718 features a balanced port design that compensates for varying head pressures, making it a critical component for maintaining performance during extreme ambient temperature swings. Whether you are performing a TXV replacement on a residential air conditioner or a Trane heat pump, the external equalizer and sensing bulb work in tandem to prevent compressor slugging and evaporator freeze-ups. This genuine Trane replacement part eliminates the guesswork of aftermarket compatibility, fitting seamlessly into Trane and American Standard 4-ton evaporator coils.
Key Benefits- Precise Superheat Control: Automatically adjusts refrigerant flow to protect the compressor from liquid slugging.
- OEM Compatibility: Guaranteed fit for Trane 4-ton cooling systems, ensuring factory-spec performance.
- Balanced Port Construction: Maintains consistent flow regardless of pressure drops across the valve.
- Durable Sweat Fittings: 3/8" inlet and 1/2" outlet ports designed for standard brazing techniques in the field.
- R410A Optimized: Factory-calibrated for the high-pressure characteristics of Puron/R-410A systems.
Is the Trane VAL8718 compatible with R-22 systems?
No, this valve is specifically calibrated for R410A refrigerant. Using it with R-22 will lead to improper metering and potential system failure.
Where should the sensing bulb be mounted?
For optimal performance, mount the bulb on a horizontal run of the suction line at the 10 or 2 o'clock position, ensuring 100% metal-to-metal contact and proper insulation.
Does this TXV include the internal trainer/screen?
Yes, this Trane VAL8718 typically includes the factory-installed screen to protect the needle and seat from debris, though the liquid line filter drier should always be replaced during installation.
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.












