Eaton 702X4 Brass Inverted Union Tee 1/4 in Flare Fitting

Product Description

The EATON 702X4 is a brass inverted union tee fitting designed for flared tube connections in refrigeration, HVAC, and fluid-system applications. It accepts a 1/4-inch tube OD on all three ports using a 45-degree flare angle with 7/16-24 SAE threads. The all-flare end connection (Flare x Flare x Flare) creates a leak-resistant joint without soldering or compression sleeves. Rated to 2000 psi maximum working pressure and 250 degrees F maximum working temperature, this fitting handles demanding service conditions. At 0.07 pounds and 1.13 inches overall length, it is compact enough for tight equipment cabinets and panel installations. HVAC technicians and refrigeration mechanics are the primary installers.

This fitting is used in residential and light commercial HVAC systems, refrigeration lines, and hydraulic or pneumatic circuits where an inverted union tee configuration is required. It suits applications calling for SAE 45-degree flare connections on 1/4-inch tubing, including split-system refrigerant lines and control-circuit tubing. The union-style design allows disconnection from any of the three ports without disturbing the remaining joints, which is useful during service calls that require partial line removal.

Key Features

• 45-degree SAE flare angle on all three ports for leak-resistant tube connections
• Rated to 2000 psi maximum working pressure for demanding refrigerant and hydraulic service
• 250 degrees F maximum working temperature suitable for typical HVAC and refrigeration operating ranges
• Inverted union tee design allows individual port disconnection without disturbing adjacent joints
• Brass construction provides corrosion resistance in refrigerant and fluid service
• Meets ASA, ASME, MS, and SAE 040401 standards

Compatibility

Designed for use with 1/4-inch OD tubing and 7/16-24 SAE 45-degree flare fittings in refrigeration, HVAC, and fluid-system applications where an inverted union tee configuration is specified.

Installation Notes

Installation is performed by licensed HVAC technicians or refrigeration mechanics. Shut off and recover all refrigerant or depressurize the fluid circuit fully before disassembling any flare connection. Use a calibrated flaring tool to produce a uniform 45-degree flare seat before torquing the nut; inspect the flare face for cracks or deformation prior to assembly. Follow applicable SAE and ASME flare-fitting guidelines for nut engagement and joint integrity verification.