Trane VAL08402 Check Valve 1/2 Inch Ods with 10 Spring

Product Description

The TRANE VAL08402 is a check valve designed for use in refrigerant circuits within commercial and residential HVAC systems. It features a 1/2-inch ODS (outside diameter sweat) connection and includes a 10-weight spring that sets the cracking pressure required to allow refrigerant flow in one direction while preventing backflow. Check valves of this type are critical components in heat pump and split-system refrigerant lines, where reverse refrigerant migration can cause compressor damage or system inefficiency. Licensed HVAC technicians install this valve as part of refrigerant circuit service or system assembly.

The VAL08402 is suited for refrigerant line applications in Trane split systems, heat pumps, and packaged HVAC equipment where a 1/2-inch ODS sweat connection is required. It is used in both new installations and replacement service work where the original check valve has failed or is being upgraded to restore proper refrigerant flow control. This part is an OEM Trane component, ensuring dimensional and functional compatibility with original system design specifications.

Key Features

• 1/2-inch ODS sweat connection for direct copper tube installation
• 10-weight spring controls cracking pressure for reliable one-directional refrigerant flow
• Prevents refrigerant backflow to protect compressor and system integrity
• OEM Trane part for consistent dimensional fit in original equipment
• Compatible with standard refrigerant circuit configurations in split and heat pump systems

Compatibility

Designed as an OEM-style replacement check valve for Trane HVAC systems requiring a 1/2-inch ODS sweat check valve with a 10-weight spring in the refrigerant circuit.

Installation Notes

Installation must be performed by a licensed HVAC technician certified to handle refrigerants under EPA Section 608 regulations. Recover all refrigerant from the system before cutting into the refrigerant circuit. Braze the valve into the line using nitrogen purge to prevent oxidation scale inside the tubing, and confirm flow-direction arrow on the valve body is oriented correctly before final braze. Leak-test all joints and recharge the system per manufacturer specifications after installation.

Technical Specifications

• Connection Size: 1/2 inch ODS (outside diameter sweat)
• Spring Weight: 10
• Valve Type: Check valve (one-directional flow)

Standard Information

• Brand: TRANE
• Manufacturer Part Number: VAL08402