Fairview 42r-108 Union Coupling 5/8 in Sae 45 Degree Flared X 1/2 in Sae 45 Degree Flared Copper Fitting

Product Description

The FAIRVIEW 42R-108 is a copper union coupling from the 42 Series product line, designed to connect two flared tube ends in refrigeration, HVAC, and fluid handling systems. This fitting joins a 5/8 inch SAE 45 degree flared connection to a 1/2 inch SAE 45 degree flared connection, making it a reliable reducer-style union for field installations and service work. All four connection points on this fitting use the SAE 45 degree flare standard, which is widely used in air conditioning lines, refrigerant piping, and other high-pressure copper tube applications. The SAE 45 degree flare joint creates a metal-to-metal seal that holds tight under pressure cycling and temperature changes, making it a preferred choice for HVAC technicians and refrigeration mechanics working on both residential and commercial systems. The 42R-108 is built from copper, which offers excellent corrosion resistance and thermal conductivity, and is compatible with a wide range of refrigerants and fluid media used in HVAC and plumbing applications. The fitting carries a pressure rating of 650 to 750 psi, making it suitable for high-pressure refrigerant lines. Its temperature rating spans from -65 to 250 degrees Fahrenheit, covering both deep-freeze refrigeration applications and high-temperature fluid systems. The tube outer diameter range supported is 5/8 inch to 1/2 inch. Trade professionals rely on Fairview 42 Series fittings for their consistent dimensional accuracy and leak-free performance. Whether you are replacing a damaged union in the field or building a new refrigerant circuit, this copper flare coupling delivers the reliability that HVAC and refrigeration technicians depend on every day.

• Copper construction for corrosion resistance and long service life in HVAC and refrigeration systems
• SAE 45 degree flare connections on all ports create a secure metal-to-metal seal rated up to 750 psi
• Wide temperature range of -65 to 250 degrees Fahrenheit suits both refrigeration and heating applications

Product Highlights

The Fairview 42R-108 union coupling provides a dependable, high-pressure SAE 45 degree flare connection between 5/8 inch and 1/2 inch copper tubes. Its all-copper body and broad temperature and pressure ratings make it a go-to fitting for HVAC and refrigeration service work.

Product Information

Standard Information

• Brand: FAIRVIEW
• Manufacturer Part Number: 42R-108

Technical Specifications

• Series: 42 Series
• Fitting Type: Coupling
• Material: Copper
• Connection Size 1: 5/8 inches
• Connection Type 1: SAE 45 Degree Flared
• Connection Size 2: 1/2 inches
• Connection Type 2: SAE 45 Degree Flared
• Connection Type 3: SAE 45 Degree Flared
• Connection Type 4: SAE 45 Degree Flared
• Tube OD: 5/8 to 1/2 inches
• Pressure Rating: 650 to 750 psi
• Temperature Rating: -65 to 250 degrees F