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Trane / American Standard VAL12789 Thermostatic Expansion Valve (TXV) – 6 Ton

Name: Trane / American Standard VAL12789 Thermostatic Expansion Valve (TXV) – 6 Ton
Brand: Trane
SKU: VAL12789
Price: 295.00 USD
Availability: InStock

Low stock: 1 left

$295.00 USD

Sale Sold out

Shipping calculated at checkout.

Key Features & Specifications

OEM Trane / American Standard thermostatic expansion valve
Designed for compatible 6-ton HVAC applications
Regulates refrigerant flow into the evaporator coil
Helps maintain proper evaporator superheat and system performance
OEM replacement TXV for compatible equipment requiring VAL12789

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Specifications

Product Details and Key Specifications:

• Part Number: VAL12789

• Manufacturer: Trane / American Standard

• Part Type: Thermostatic Expansion Valve

• Abbreviation: TXV

• Nominal Capacity: 6 Ton

• System Capacity: Approximately 72,000 BTU/h

• Application: Evaporator Coil Refrigerant Metering

• Function: Controls refrigerant flow entering the evaporator coil

• Control Method: Thermostatic / Superheat Responsive

• Installation Type: OEM Replacement

• Compatible Brands: Trane, American Standard

• Equipment Type: Compatible Split Systems, Air Handlers, Evaporator Coils, and HVAC Equipment

description

Trane / American Standard VAL12789 Thermostatic Expansion Valve (TXV) – 6 Ton

The Trane / American Standard VAL12789 Thermostatic Expansion Valve (TXV) is an OEM refrigerant metering device designed for compatible 6-ton HVAC systems. The TXV regulates refrigerant flow entering the evaporator coil according to system demand, helping maintain proper evaporator superheat and efficient cooling performance.

The VAL12789 is designed to respond to changing operating conditions by adjusting refrigerant flow through the evaporator. A properly operating TXV helps maximize coil performance, maintain system capacity, and protect the compressor from improper refrigerant conditions.

Key Features and Function:

• 6-Ton Capacity – Designed for compatible 6-ton HVAC applications

• Thermostatic Expansion Valve – Automatically regulates refrigerant flow into the evaporator coil

• Superheat Control – Helps maintain proper evaporator superheat during changing load conditions

• OEM Replacement – Designed for compatible Trane and American Standard equipment

• Improved Refrigerant Control – Meters refrigerant according to evaporator demand

• Compressor Protection – Proper refrigerant metering helps prevent excessive liquid refrigerant from returning to the compressor

Product Details and Key Specifications:

• Part Number: VAL12789

• Manufacturer: Trane / American Standard

• Part Type: Thermostatic Expansion Valve

• Abbreviation: TXV

• Nominal Capacity: 6 Ton

• System Capacity: Approximately 72,000 BTU/h

• Application: Evaporator Coil Refrigerant Metering

• Function: Controls refrigerant flow entering the evaporator coil

• Control Method: Thermostatic / Superheat Responsive

• Installation Type: OEM Replacement

• Compatible Brands: Trane, American Standard

• Equipment Type: Compatible Split Systems, Air Handlers, Evaporator Coils, and HVAC Equipment

🛠️ HVAC Depot Pro Tip: Verify Refrigerant Type Before Ordering

Tonnage alone is not enough to select a TXV. Before ordering the VAL12789, verify the OEM part number, refrigerant type, valve capacity, inlet/outlet connection sizes, flow direction, and equipment model number.

TXVs designed for different refrigerants or applications should not be substituted solely because they have the same nominal tonnage.

Cross-Reference & Compatibility:

The VAL12789 is intended for compatible HVAC equipment requiring:

• OEM Part Number: VAL12789

• Component: Thermostatic Expansion Valve (TXV)

• Nominal Capacity: 6 Ton

• Nominal Cooling Capacity: 72,000 BTU/h

• Application: Evaporator Refrigerant Metering

• Compatible Brands: Trane / American Standard

• Compatible Equipment: Select HVAC systems specifically calling for VAL12789

Always verify the complete equipment model number and OEM specifications before ordering. Do not determine TXV compatibility by tonnage alone.

Extensive Equipment Compatibility:

Typical Applications:

• Trane Air Conditioning Systems

• American Standard Air Conditioning Systems

• Trane Heat Pump Systems

• American Standard Heat Pump Systems

• Evaporator Coils

• Air Handlers

• Split-System HVAC Equipment

• Light Commercial HVAC Equipment

• Select 6-Ton Systems Requiring VAL12789

Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

At HVAC Parts & Equipment Depot, customer satisfaction is important to us. This Refund & Return Policy explains how returns, exchanges, and refunds are handled for purchases made through TopHVACParts.com.

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

The item must be unused, uninstalled, and in its original condition.
The item must be returned in its original packaging.
Model numbers and serial numbers must match the original purchase records.
Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

Installed or used parts.
Products showing signs of installation, modification, or damage caused after delivery.
Items missing original packaging.
Sale or clearance items.
Special-order or custom-order products.
Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

Refunds will be issued to the original payment method.
Processing typically takes 7–14 business days after approval.
Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

Our shipping error,
A defective product,
A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Refund & Return Policy

Last Updated: June 2026

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

The item must be unused, uninstalled, and in its original condition.
The item must be returned in its original packaging.
Model numbers and serial numbers must match the original purchase records.
Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

Installed or used parts.
Products showing signs of installation, modification, or damage caused after delivery.
Items missing original packaging.
Sale or clearance items.
Special-order or custom-order products.
Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

Refunds will be issued to the original payment method.
Processing typically takes 7–14 business days after approval.
Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

Our shipping error,
A defective product,
A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

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Frequently Asked Questions

Questions? We’ve got you covered

Can anyone buy from your store, or do I need to be a licensed contractor?

We are open to the public! Homeowners, landlords, and DIYers are all welcome—no license required.

What kinds of HVAC parts do you sell?

We carry blower motors, fan motors, capacitors, control boards, contactors, thermostats, filters, copper lines, refrigerants, and more.

Do you sell parts for specific brands like Trane, Goodman, or Lennox?

Yes, we stock OEM and compatible replacement parts for major brands including Trane, Goodman, Lennox, Carrier, Rheem, and others.

Can you help me find the right part for my system?

Absolutely! Bring in the part, model number, or a picture, and our team will help match you with the correct replacement.

Do you offer returns or exchanges on parts?

Yes, we accept returns or exchanges within a set time period—just make sure the item is unused and in original packaging. Ask for specific terms at the counter.

Do you provide technical support or installation services?

While we don't install, we can answer basic questions and refer you to trusted local HVAC technicians if needed.

Do you sell refrigerants to the public?

We sell certain refrigerants, but EPA regulations require certification for purchase of products like R-410A or R-22.

Do you ship parts, or is it in-store only?

We offer both! You can shop in person or call to arrange shipping if you're out of town.

Trane / American Standard VAL12789 Thermostatic Expansion Valve (TXV) – 6 Ton