Brass flare union for HVAC and refrigeration flare connections. 45° SAE flare to flare. Forged brass, SAE J512/J513 compliant. Connects copper tubes without brazing. Sizes 1/4″ to 7/8″. Working pressure 700 psi.
45° Flare Union – Brass Flare to Flare Connector for HVAC
Our Brass Flare Union is a precision-machined fitting designed to connect two 45° SAE flared copper tube ends in a straight line for air conditioning, refrigeration, and heat pump systems. Manufactured from forged brass, it offers high mechanical strength, vibration resistance, and a pore-free structure that prevents refrigerant seepage.
The union provides a metal-to-metal seal — the flared tube end is clamped between the flare nut and the fitting body, creating a reliable, leak-proof connection without the need for brazing or open flame. This makes it ideal for service connections, line extensions, and field repairs where soldering is impractical or unsafe.
| Parameter | Details |
|---|---|
| Material | Forged Brass |
| Standard | SAE J512 / SAE J513 |
| Type | Flare Union (Flare x Flare) |
| Connection | 45° SAE Flare to Flare |
| Size Range | 1/4″ – 7/8″ (6.35mm – 22.23mm) |
| Working Pressure | Up to 700 psi |
| Operating Temperature | -65°F to +250°F (-54°C to +121°C) |
| Thread Type | UNF (SAE) |
| Surface | Smooth, lead-free options available |
No Brazing Required – Metal-to-metal flare seal connects copper tubes without open flame, ideal for field service and repair work in refrigerant lines
Forged Brass Construction – Eliminates porosity and seepage risk found in cast fittings, ensuring a leak-proof seal under high pressure
Vibration Resistant – Forged structure withstands vibration in compressor lines better than machined or cast fittings
45° SAE Flare Seat – Precision-machined flare seat creates a reliable seal that can be assembled and disassembled repeatedly without damage
Versatile Tube Compatibility – Works with copper, brass, aluminum, and welded steel tubing that can be flared to 45°
Connecting two flared copper tube ends in refrigerant lines
Service connections and line extensions in split AC and refrigeration systems
Field repairs where brazing is impractical or unsafe
Propane, fuel, and natural gas lines (UL listed for flammable liquids)
OEM assembly of air conditioners, heat pumps, and refrigeration units
Size – 1/4″ to 7/8″, custom sizes available
Material – Standard brass; lead-free brass on request
Surface – Natural, nickel-plated, or custom finish
OEM/ODM – Custom dimensions and thread specifications accepted per customer drawing
Packaging – Bulk carton, individual bag, or custom labeled packaging
Lead Time – 7–25 days for standard sizes
MOQ – Flexible, contact us for details
Samples – Available upon request
For technical datasheets, samples, or bulk pricing, contact us directly.
