Directedair da03r-05x04 Reducing Coupling 1/2 X 3/8 Copper

Product Description

The DIRECTEDAIR da03r-05x04 is a copper reducing coupling designed to transition between 1/2-inch and 3/8-inch copper tubing connections. This fitting is used in refrigeration, HVAC, and plumbing systems where line sizes change along a run. Both ends use copper-to-copper connections, making it compatible with standard sweat or press joining methods. The all-copper construction ensures corrosion resistance and reliable long-term performance in both indoor and outdoor installations. HVAC technicians and plumbers install this type of fitting when connecting components with differing tube diameters or when routing refrigerant or fluid lines through tight system configurations.

This reducing coupling is suited for residential and light commercial HVAC and refrigeration applications where a 1/2-inch copper line must be reduced to a 3/8-inch copper line, or vice versa. It is also applicable in hydronic and domestic plumbing systems where copper tubing transitions are required. The fitting is appropriate for installations where copper sweat joints are the standard joining method per local code requirements.

Key Features

• Transitions between 1/2-inch and 3/8-inch copper tubing
• All-copper construction for corrosion resistance and durability
• Compatible with standard sweat (solder) joining methods
• Suitable for HVAC, refrigeration, and plumbing line sets
• Manufactured to industry dimensional and material composition standards

Compatibility

Designed as an OEM-style replacement or new-installation copper reducing coupling for use in 1/2-inch to 3/8-inch copper tubing applications in HVAC, refrigeration, and plumbing systems.

Installation Notes

This fitting is installed by licensed HVAC technicians or plumbers using standard copper sweat (solder) or press-fit methods, depending on the approved joining system in use. All refrigerant system work must be performed by EPA Section 608 certified technicians, and plumbing installations must comply with applicable IPC or local plumbing codes. Ensure the system is depressurized and isolated before cutting into any existing line. Clean and deburr both tube ends before fitting and flux application to ensure a leak-free joint.

Technical Specifications

• Connection Size 1: 1/2 inches
• Connection Type 1: Copper
• Connection Size 2: 3/8 inches
• Connection Type 2: Copper
• Material: Copper

Standard Information

• Brand: DIRECTEDAIR
• Manufacturer Part Number: da03r-05x04