The LIZIFEQZ 1/2" Brass Flare Nut is a precision-engineered component designed for high-flow applications requiring larger diameter copper tubing. Ideal for main supply lines, commercial HVAC systems, and industrial refrigeration, these 1/2 inch SAE 45° flare nuts deliver reliable, leak-proof connections in demanding environments. Crafted from high-quality solid brass, each flare nut offers exceptional corrosion resistance, high-temperature ductility, and low magnetic permeability. The material withstands harsh environments, making it ideal for applications ranging from main gas lines to commercial water systems. The SAE 45° flare design creates a robust metal-to-metal seal when tightened against a flared copper tube end. This sealing method provides several advantages over welded or soldered connections: No Welding Required: Quick, clean installation without special equipment Reusable: Easily disassemble and reconnect without replacing components Temperature Resistant: Maintains seal integrity from -65°F to +250°F High Pressure Capable: Withstands up to 1200 PSI working pressure Leak-Proof: Metal-to-metal seal eliminates need for sealants or gaskets These versatile fittings are perfect for countless applications: Main Supply Lines: Natural gas, propane, and water main connections Commercial HVAC: Large air conditioning units, heat pumps, and chillers Industrial Refrigeration: Cold storage, process cooling, and food processing Hydronic Heating: Boiler connections and radiant heating systems Marine & Industrial: Fuel lines and cooling systems for heavy equipment Each set includes 10 brass flare nuts, providing ample supply for multiple connections or replacements.