1/2 inch Copper Union Copper x Male

1/2 inch Copper Union – Built for Secure, Removable Plumbing Connections

The 1/2 inch Copper Union is designed for permanent yet serviceable connections in copper piping systems. Fabricated from lead-free wrought copper alloy, this union provides a strong, corrosion-resistant joint that meets NSF 61-G and NSF 372 requirements for potable water systems.

Performance Advantages

• Lead-Free Copper Construction: Complies with federal and state low-lead regulations for potable water use
• Removable Joint: Allows easy disassembly without cutting pipe, ideal for maintenance or system upgrades
• Solid Hex Nut: Precision-machined for a tight mechanical connection between mating ends
• Sweat Connection Ends: Designed for soldering to 1/2 inch nominal copper tubing in accordance with ASME B16.22

Technical Specifications

• Size: 1/2 inch nominal
• Material: Lead-free wrought copper
• End Connections: Female sweat x Female sweat
• Pressure Rating: 200 PSI max (non-shock), dependent on system temperature and design
• Standard Compliance: ASME B16.22, NSF/ANSI 61-G & 372, ASTM B75/B88

Applications

Commonly used in hot and cold water supply lines, heating systems, and other serviceable sections of plumbing. Especially suited for connections where future disassembly may be required—such as at valves, equipment, or test points—without compromising the system integrity.

Installation Recommendations

Proper cleaning and flux application are required before soldering. Ensure correct heating techniques to avoid annealing or damaging the union threads. Use a wrench to snug the union nut after system cool-down. Avoid overtightening to preserve sealing surfaces.

Did You Know?

Copper unions allow a rigid copper system to be segmented into easily maintainable sections without compromising performance or requiring specialized tools for future disassembly.

The 1/2 inch Copper Union delivers a strong, pressure-tight seal with the added benefit of disconnection when needed—making it a staple for both new construction and retrofit plumbing installations that demand long-term reliability.