
Trane VAL12835 Valve
The Trane VAL12835 Thermal Expansion Valve (TXV) is a critical metering component designed for high-capacity 20-ton commercial refrigeration and HVAC systems. Built for precision in R-410A refrigerant applications, this balanced-port valve features a 15% bleed and handles system pressures up to 660 PSI. Its primary function is to regulate the flow of liquid refrigerant into the evaporator coil, maintaining precise superheat and protecting the HVAC compressor from liquid slugging. With an ODF connection (1/2" inlet and 5/8" outlet) and a 36" capillary tube, it ensures responsive flow modulation based on varying load conditions. For technicians servicing TSD series roof-top units and large-scale split systems, the Trane VAL12835 provides the exact OEM mechanical response required to restore factory-spec cooling efficiency and system balance.
Key Benefits for HVACR Applications:
- 20-Ton Cooling Capacity: Specifically engineered for commercial-grade evaporator coils requiring high-volume refrigerant control.
- Optimized Superheat Regulation: Prevents liquid floodback to the HVAC compressor, ensuring long-term mechanical reliability under heavy loads.
- R-410A Compatibility: High-pressure construction designed to withstand 660 PSI operating environments common in modern high-efficiency systems.
- Balanced Port Design: Compensates for variations in head pressure to maintain consistent evaporator feeding across a wider range of ambient temperatures.
- Direct OEM Replacement: Matches exact factory specifications for 1/2" x 5/8" ODF connections, reducing installation time and eliminating the need for hard-piping modifications.
Common Questions Regarding the Trane VAL12835:
How do I confirm compatibility with a specific Trane rooftop unit?
Technicians should verify the unit’s tonnage and refrigerant type (R-410A). This 20-ton valve is commonly utilized in the second stage (SYS2) of large TSD and YSD series commercial package units. Always check the model and serial number against the factory parts list.
What is the purpose of the 15% bleed on this model?
The 15% bleed feature allows for limited pressure equalization between the high and low sides during the off-cycle. This assists the compressor during startup by reducing the initial torque required to overcome pressure differentials.
Does this valve require an external equalizer?
Yes, as a high-capacity 20-ton TXV with ODF connections, an external equalizer is standard to ensure accurate sensing of the evaporator pressure at the outlet, allowing for precise superheat control across the entire coil surface.
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: $231.70
-65%$231.70
$81.09Trane VAL12835 Valve
The Trane VAL12835 Thermal Expansion Valve (TXV) is a critical metering component designed for high-capacity 20-ton commercial refrigeration and HVAC systems. Built for precision in R-410A refrigerant applications, this balanced-port valve features a 15% bleed and handles system pressures up to 660 PSI. Its primary function is to regulate the flow of liquid refrigerant into the evaporator coil, maintaining precise superheat and protecting the HVAC compressor from liquid slugging. With an ODF connection (1/2" inlet and 5/8" outlet) and a 36" capillary tube, it ensures responsive flow modulation based on varying load conditions. For technicians servicing TSD series roof-top units and large-scale split systems, the Trane VAL12835 provides the exact OEM mechanical response required to restore factory-spec cooling efficiency and system balance.
Key Benefits for HVACR Applications:
- 20-Ton Cooling Capacity: Specifically engineered for commercial-grade evaporator coils requiring high-volume refrigerant control.
- Optimized Superheat Regulation: Prevents liquid floodback to the HVAC compressor, ensuring long-term mechanical reliability under heavy loads.
- R-410A Compatibility: High-pressure construction designed to withstand 660 PSI operating environments common in modern high-efficiency systems.
- Balanced Port Design: Compensates for variations in head pressure to maintain consistent evaporator feeding across a wider range of ambient temperatures.
- Direct OEM Replacement: Matches exact factory specifications for 1/2" x 5/8" ODF connections, reducing installation time and eliminating the need for hard-piping modifications.
Common Questions Regarding the Trane VAL12835:
How do I confirm compatibility with a specific Trane rooftop unit?
Technicians should verify the unit’s tonnage and refrigerant type (R-410A). This 20-ton valve is commonly utilized in the second stage (SYS2) of large TSD and YSD series commercial package units. Always check the model and serial number against the factory parts list.
What is the purpose of the 15% bleed on this model?
The 15% bleed feature allows for limited pressure equalization between the high and low sides during the off-cycle. This assists the compressor during startup by reducing the initial torque required to overcome pressure differentials.
Does this valve require an external equalizer?
Yes, as a high-capacity 20-ton TXV with ODF connections, an external equalizer is standard to ensure accurate sensing of the evaporator pressure at the outlet, allowing for precise superheat control across the entire coil surface.
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
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Description
The Trane VAL12835 Thermal Expansion Valve (TXV) is a critical metering component designed for high-capacity 20-ton commercial refrigeration and HVAC systems. Built for precision in R-410A refrigerant applications, this balanced-port valve features a 15% bleed and handles system pressures up to 660 PSI. Its primary function is to regulate the flow of liquid refrigerant into the evaporator coil, maintaining precise superheat and protecting the HVAC compressor from liquid slugging. With an ODF connection (1/2" inlet and 5/8" outlet) and a 36" capillary tube, it ensures responsive flow modulation based on varying load conditions. For technicians servicing TSD series roof-top units and large-scale split systems, the Trane VAL12835 provides the exact OEM mechanical response required to restore factory-spec cooling efficiency and system balance.
Key Benefits for HVACR Applications:
- 20-Ton Cooling Capacity: Specifically engineered for commercial-grade evaporator coils requiring high-volume refrigerant control.
- Optimized Superheat Regulation: Prevents liquid floodback to the HVAC compressor, ensuring long-term mechanical reliability under heavy loads.
- R-410A Compatibility: High-pressure construction designed to withstand 660 PSI operating environments common in modern high-efficiency systems.
- Balanced Port Design: Compensates for variations in head pressure to maintain consistent evaporator feeding across a wider range of ambient temperatures.
- Direct OEM Replacement: Matches exact factory specifications for 1/2" x 5/8" ODF connections, reducing installation time and eliminating the need for hard-piping modifications.
Common Questions Regarding the Trane VAL12835:
How do I confirm compatibility with a specific Trane rooftop unit?
Technicians should verify the unit’s tonnage and refrigerant type (R-410A). This 20-ton valve is commonly utilized in the second stage (SYS2) of large TSD and YSD series commercial package units. Always check the model and serial number against the factory parts list.
What is the purpose of the 15% bleed on this model?
The 15% bleed feature allows for limited pressure equalization between the high and low sides during the off-cycle. This assists the compressor during startup by reducing the initial torque required to overcome pressure differentials.
Does this valve require an external equalizer?
Yes, as a high-capacity 20-ton TXV with ODF connections, an external equalizer is standard to ensure accurate sensing of the evaporator pressure at the outlet, allowing for precise superheat control across the entire coil surface.
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.












