
Trane VAL9931 Expansion Valve
Ensure precise superheat control and peak system efficiency with the Trane VAL9931 Expansion Valve. For veteran technicians managing R-410A refrigerant circuits, this electronic expansion valve (EEV) provides the motorized modulation required to maintain stable evaporator performance under varying load conditions. Unlike standard thermal expansion valves, the VAL09931 utilizes a 24 VAC stepper motor to provide a motorized refrigerant metering solution, accurately ramping flow to maximize the cooling capacity of residential and commercial units up to 10 tons.
Built with a durable stainless steel body and piston, this genuine OEM replacement part is engineered for longevity in high-pressure environments up to 350 psi. Whether you are performing an HVAC system upgrade or troubleshooting a circuit that is failing to saturate the coil, the VAL9931's precise modulation reduces energy consumption and ensures consistent temperature setpoints. This valve is a direct fit for electronically controlled HVAC systems, providing the responsiveness needed for high-demand cooling scenarios and improved indoor air quality through superior humidity control.
Key Benefits
- Precision Metering: Motorized piston modulation allows for exact refrigerant flow, eliminating the hunting common in older mechanical valves.
- Broad Compatibility: Works seamlessly with R-410A systems and standard 24 VAC controllers found in modern Trane and American Standard equipment.
- Extreme Durability: Stainless steel construction is rated for temperatures ranging from -40°F to 250°F, ensuring reliability in industrial applications.
- System Efficiency: Optimizes superheat in real-time to lower compressor work and reduce overall energy costs for the facility.
Common Questions
Is the VAL9931 a direct replacement for mechanical TXVs?
No, this is an electronic expansion valve that requires a compatible EEV controller and sensors to operate the 24 VAC motor; it cannot be used as a drop-in for a standard bulb-style TXV.
What refrigerant charge is required for this valve?
Proper operation depends on the specific system configuration, but the VAL9931 is optimized for R-410A systems and can handle capacities up to 10 tons depending on the pressure drop across the orifice.
Can this valve be used in heating mode for heat pump applications?
Yes, as long as the system design accounts for bi-directional flow or utilizes a check-valve bypass, the VAL9931 provides accurate modulation in both heating and cooling cycles.
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.
Original: $124.55
-65%$124.55
$43.59Trane VAL9931 Expansion Valve
Ensure precise superheat control and peak system efficiency with the Trane VAL9931 Expansion Valve. For veteran technicians managing R-410A refrigerant circuits, this electronic expansion valve (EEV) provides the motorized modulation required to maintain stable evaporator performance under varying load conditions. Unlike standard thermal expansion valves, the VAL09931 utilizes a 24 VAC stepper motor to provide a motorized refrigerant metering solution, accurately ramping flow to maximize the cooling capacity of residential and commercial units up to 10 tons.
Built with a durable stainless steel body and piston, this genuine OEM replacement part is engineered for longevity in high-pressure environments up to 350 psi. Whether you are performing an HVAC system upgrade or troubleshooting a circuit that is failing to saturate the coil, the VAL9931's precise modulation reduces energy consumption and ensures consistent temperature setpoints. This valve is a direct fit for electronically controlled HVAC systems, providing the responsiveness needed for high-demand cooling scenarios and improved indoor air quality through superior humidity control.
Key Benefits
- Precision Metering: Motorized piston modulation allows for exact refrigerant flow, eliminating the hunting common in older mechanical valves.
- Broad Compatibility: Works seamlessly with R-410A systems and standard 24 VAC controllers found in modern Trane and American Standard equipment.
- Extreme Durability: Stainless steel construction is rated for temperatures ranging from -40°F to 250°F, ensuring reliability in industrial applications.
- System Efficiency: Optimizes superheat in real-time to lower compressor work and reduce overall energy costs for the facility.
Common Questions
Is the VAL9931 a direct replacement for mechanical TXVs?
No, this is an electronic expansion valve that requires a compatible EEV controller and sensors to operate the 24 VAC motor; it cannot be used as a drop-in for a standard bulb-style TXV.
What refrigerant charge is required for this valve?
Proper operation depends on the specific system configuration, but the VAL9931 is optimized for R-410A systems and can handle capacities up to 10 tons depending on the pressure drop across the orifice.
Can this valve be used in heating mode for heat pump applications?
Yes, as long as the system design accounts for bi-directional flow or utilizes a check-valve bypass, the VAL9931 provides accurate modulation in both heating and cooling cycles.
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
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Description
Ensure precise superheat control and peak system efficiency with the Trane VAL9931 Expansion Valve. For veteran technicians managing R-410A refrigerant circuits, this electronic expansion valve (EEV) provides the motorized modulation required to maintain stable evaporator performance under varying load conditions. Unlike standard thermal expansion valves, the VAL09931 utilizes a 24 VAC stepper motor to provide a motorized refrigerant metering solution, accurately ramping flow to maximize the cooling capacity of residential and commercial units up to 10 tons.
Built with a durable stainless steel body and piston, this genuine OEM replacement part is engineered for longevity in high-pressure environments up to 350 psi. Whether you are performing an HVAC system upgrade or troubleshooting a circuit that is failing to saturate the coil, the VAL9931's precise modulation reduces energy consumption and ensures consistent temperature setpoints. This valve is a direct fit for electronically controlled HVAC systems, providing the responsiveness needed for high-demand cooling scenarios and improved indoor air quality through superior humidity control.
Key Benefits
- Precision Metering: Motorized piston modulation allows for exact refrigerant flow, eliminating the hunting common in older mechanical valves.
- Broad Compatibility: Works seamlessly with R-410A systems and standard 24 VAC controllers found in modern Trane and American Standard equipment.
- Extreme Durability: Stainless steel construction is rated for temperatures ranging from -40°F to 250°F, ensuring reliability in industrial applications.
- System Efficiency: Optimizes superheat in real-time to lower compressor work and reduce overall energy costs for the facility.
Common Questions
Is the VAL9931 a direct replacement for mechanical TXVs?
No, this is an electronic expansion valve that requires a compatible EEV controller and sensors to operate the 24 VAC motor; it cannot be used as a drop-in for a standard bulb-style TXV.
What refrigerant charge is required for this valve?
Proper operation depends on the specific system configuration, but the VAL9931 is optimized for R-410A systems and can handle capacities up to 10 tons depending on the pressure drop across the orifice.
Can this valve be used in heating mode for heat pump applications?
Yes, as long as the system design accounts for bi-directional flow or utilizes a check-valve bypass, the VAL9931 provides accurate modulation in both heating and cooling cycles.
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.












