Trane VAL9478 TXV
The Trane VAL9478 is an OEM-grade thermostatic expansion valve (TXV) engineered specifically for 4-ton cooling applications. Designed for high-pressure R410A refrigerant, this component features a 3/8" ODF inlet and a 1/2" ODF outlet, ensuring low-restriction sweat connections in residential and light commercial air conditioning systems. The 5-foot capillary tube provides the necessary reach for precise bulb placement on the suction line, allowing for accurate superheat regulation and optimal evaporator coil performance.
Built with a durable brass body and a balanced port design, the VAL9478 expansion valve effectively manages liquid refrigerant flow to prevent evaporator flooding and compressor liquid floodback. This valve is rated for pressures up to 700 PSI, making it a reliable Trane replacement part for maintaining system efficiency and protecting the compressor from damage during variable load conditions.
Key Benefits- Precise Superheat Control: Automatically adjusts refrigerant flow to maintain stable superheat levels across the evaporator coil.
- OEM Compatibility: Exact Trane HVAC part for 4-ton air conditioners and heat pumps using R410A.
- Durable Support: Robust brass construction and high-pressure rating (700 PSI) for long-term field reliability.
- Simplified Installation: 3/8" x 1/2" sweat connections and a 5' capillary lead cater to standard piping configurations.
Is the VAL9478 compatible with refrigerants other than R410A?
While functionally capable of handling flow for R134a or R407C in specific capacities, this valve is factory-calibrated for R410A in 4-ton systems to ensure the correct pressure-temperature response.
Does this TXV include a internal check valve for heat pump applications?
The Trane VAL9478 is a bi-flow capable component often used in heat pump systems, but technicians should verify the specific piping layout and flow requirements of the outdoor unit before installation.
What is the purpose of the 5-foot capillary tube?
The 5' capillary gives the technician enough length to securely mount the sensing bulb to the suction line in the proper orientation (usually between 10 and 2 o'clock) for accurate temperature sensing.
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 VAL9478 TXV
The Trane VAL9478 is an OEM-grade thermostatic expansion valve (TXV) engineered specifically for 4-ton cooling applications. Designed for high-pressure R410A refrigerant, this component features a 3/8" ODF inlet and a 1/2" ODF outlet, ensuring low-restriction sweat connections in residential and light commercial air conditioning systems. The 5-foot capillary tube provides the necessary reach for precise bulb placement on the suction line, allowing for accurate superheat regulation and optimal evaporator coil performance.
Built with a durable brass body and a balanced port design, the VAL9478 expansion valve effectively manages liquid refrigerant flow to prevent evaporator flooding and compressor liquid floodback. This valve is rated for pressures up to 700 PSI, making it a reliable Trane replacement part for maintaining system efficiency and protecting the compressor from damage during variable load conditions.
Key Benefits- Precise Superheat Control: Automatically adjusts refrigerant flow to maintain stable superheat levels across the evaporator coil.
- OEM Compatibility: Exact Trane HVAC part for 4-ton air conditioners and heat pumps using R410A.
- Durable Support: Robust brass construction and high-pressure rating (700 PSI) for long-term field reliability.
- Simplified Installation: 3/8" x 1/2" sweat connections and a 5' capillary lead cater to standard piping configurations.
Is the VAL9478 compatible with refrigerants other than R410A?
While functionally capable of handling flow for R134a or R407C in specific capacities, this valve is factory-calibrated for R410A in 4-ton systems to ensure the correct pressure-temperature response.
Does this TXV include a internal check valve for heat pump applications?
The Trane VAL9478 is a bi-flow capable component often used in heat pump systems, but technicians should verify the specific piping layout and flow requirements of the outdoor unit before installation.
What is the purpose of the 5-foot capillary tube?
The 5' capillary gives the technician enough length to securely mount the sensing bulb to the suction line in the proper orientation (usually between 10 and 2 o'clock) for accurate temperature sensing.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Trane VAL9478 is an OEM-grade thermostatic expansion valve (TXV) engineered specifically for 4-ton cooling applications. Designed for high-pressure R410A refrigerant, this component features a 3/8" ODF inlet and a 1/2" ODF outlet, ensuring low-restriction sweat connections in residential and light commercial air conditioning systems. The 5-foot capillary tube provides the necessary reach for precise bulb placement on the suction line, allowing for accurate superheat regulation and optimal evaporator coil performance.
Built with a durable brass body and a balanced port design, the VAL9478 expansion valve effectively manages liquid refrigerant flow to prevent evaporator flooding and compressor liquid floodback. This valve is rated for pressures up to 700 PSI, making it a reliable Trane replacement part for maintaining system efficiency and protecting the compressor from damage during variable load conditions.
Key Benefits- Precise Superheat Control: Automatically adjusts refrigerant flow to maintain stable superheat levels across the evaporator coil.
- OEM Compatibility: Exact Trane HVAC part for 4-ton air conditioners and heat pumps using R410A.
- Durable Support: Robust brass construction and high-pressure rating (700 PSI) for long-term field reliability.
- Simplified Installation: 3/8" x 1/2" sweat connections and a 5' capillary lead cater to standard piping configurations.
Is the VAL9478 compatible with refrigerants other than R410A?
While functionally capable of handling flow for R134a or R407C in specific capacities, this valve is factory-calibrated for R410A in 4-ton systems to ensure the correct pressure-temperature response.
Does this TXV include a internal check valve for heat pump applications?
The Trane VAL9478 is a bi-flow capable component often used in heat pump systems, but technicians should verify the specific piping layout and flow requirements of the outdoor unit before installation.
What is the purpose of the 5-foot capillary tube?
The 5' capillary gives the technician enough length to securely mount the sensing bulb to the suction line in the proper orientation (usually between 10 and 2 o'clock) for accurate temperature sensing.
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.
