Fairview 42r-86 Union Coupling 1/2 in Sae 45 Degree Flare Tube X 3/8 in Sae 45 Degree Flare Tube Brass

Product Description

The FAIRVIEW 42R-86 is a brass union coupling from the 42R Series, designed to connect two SAE 45 degree flare tube lines of different sizes. One end accepts a 1/2 inch SAE 45 degree flare tube, and the other end accepts a 3/8 inch SAE 45 degree flare tube. This reducer union coupling allows technicians to join mismatched tube sizes in a single, leak-resistant connection without the need for additional adapters. It is built entirely from brass, which provides excellent corrosion resistance, durability under pressure, and long service life in demanding environments. HVAC technicians, plumbers, and refrigeration service professionals regularly rely on SAE 45 degree flare fittings for gas lines, refrigerant lines, and fluid distribution systems. The SAE flare connection style creates a metal-to-metal seat that forms a tight, reliable seal when properly torqued. This type of union coupling is especially useful during system repairs or retrofits where two sections of tubing with different outside diameters must be joined inline. The 42R-86 supports tube outside diameters from 3/8 inch up to 1/2 inch, making it a practical reducer fitting for common tubing sizes found across residential and light commercial systems. The temperature rating of -65 to 250 degrees Fahrenheit means this fitting performs reliably across a wide range of operating conditions, from cold refrigeration applications to hot fluid lines. The all-brass construction also makes it compatible with a variety of media including natural gas, propane, refrigerants, and hydraulic fluids, depending on system requirements. This is a field-ready fitting that meets the precision standards trade professionals expect on every job.

• Reduces from 1/2 inch to 3/8 inch SAE 45 degree flare tube connections in one fitting
• All-brass construction offers corrosion resistance and long service life
• Wide temperature range of -65 to 250 degrees Fahrenheit suits refrigeration, HVAC, and plumbing applications

Product Highlights

The FAIRVIEW 42R-86 union coupling delivers a dependable, metal-to-metal SAE flare seal between two different tube sizes. Its all-brass body and broad temperature range make it a reliable choice for HVAC, refrigeration, and plumbing service work.

Product Information

Standard Information

• Brand: FAIRVIEW
• Manufacturer Part Number: 42R-86

Technical Specifications

• Series: 42R Series
• Fitting Type: Coupling
• Connection Size 1: 1/2 inches
• Connection Type 1: SAE 45 Degree Flare Tube
• Connection Size 2: 3/8 inches
• Connection Type 2: SAE 45 Degree Flare Tube
• Connection Type: SAE Flared x SAE Flared
• Tube OD: 3/8 to 1/2 inches
• Material Construction: Brass
• Temperature Rating: -65 to 250 degrees F