JB U2-8 1/2" SAE Flare to Flare Union

For field techs needing a reliable metal-to-metal seal, the JB U2-8 1/2" SAE Flare to Flare Union is a standard-issue HVAC brass fitting engineered for high-pressure refrigeration and fluid transfer. Machined in the USA from premium heavy-duty brass (typically 65% copper and 35% zinc), this 1/2 inch flare union provides superior tensile strength and corrosion resistance compared to budget imports. This SAE 45-degree flare connector is fully compatible with copper, brass, aluminum, and even steel or plastic tubing, provided a proper flare can be generated. For contractors managing refrigerant line leak repair, the forged body design ensures a robust, "make and break" connection that stands up to frequent assembly and disassembly. With a high pressure rating and compliance with SAE J513 standards, it is an essential component for sustaining system integrity in AC service and repair. Trust this union for a precise flare to flare connection that holds deep vacuum and high-side pressures without failure.

• Engineered for Versatility: Direct 1/2" SAE flare to 1/2" SAE flare connection compatible with multiple tubing materials including ACR copper tubing and aluminum.
• Superior Material Integrity: Forged from high-tensile brass to eliminate the risk of cracking or porosity often found in lower-quality cast fittings.
• Vibration Resistance: Designed to maintain a leak-proof HVAC seal even in high-vibration applications like condenser and compressor lines.
• Standardized Threading: Complies with SAE, ASA, and AHRI standards for seamless integration with existing HVAC refrigeration tools and components.

What is the maximum pressure rating for this 1/2" flare union?
While the brass forging can handle pressures up to 5,000 PSI depending on conditions, the practical limit is typically governed by the tubing material and the flare nuts used in the assembly.

Can I use this union on R-410A high-pressure systems?
Yes, the high-pressure SAE flare fitting is designed for modern R-410A refrigerant applications, providing a secure mechanical seal that exceeds standard operating requirements.

Does this fitting require thread sealant or Teflon tape?
No, flare connections rely on a metal-to-metal mechanical seal. Applying tape or sealant to the 45-degree flare threads can actually interfere with proper torque and cause leaks.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.