The Viega ProPress Copper Union 1-1/4" x 1-1/4" (79140) is a durable, high-performance press fitting designed for fast, safe, and flame-free pipe connections. Built from quality copper, it delivers long-lasting strength, corrosion resistance, and dependable performance in demanding plumbing and HVAC applications.

This union fitting is engineered for use with the Viega ProPress system, allowing installers to create secure, leak-resistant joints in seconds without soldering or open flames. Its efficient press technology helps reduce installation time, labor costs, and jobsite risk while maintaining professional-grade reliability.

Ideal for residential, commercial, and mechanical piping systems, the Viega ProPress Copper Union ensures consistent results and a clean, streamlined installation process.