The Viega ProPress Copper Coupling with Stop 1 in x 1 in (Model 78057) is a professional-grade press fitting designed for fast, reliable, and flame-free connections in copper piping systems. The integrated stop ensures proper pipe insertion depth, helping installers achieve consistent, secure joints every time.

Manufactured from durable, lead-free copper alloy, this coupling is approved for potable water applications and meets industry standards for strength, safety, and long-term performance. Viega’s advanced press technology delivers dependable, leak-resistant connections without the need for soldering, reducing installation time and improving jobsite safety.

Equipped with EPDM sealing elements, this fitting provides excellent resistance to pressure and temperature variations. Smart Connect technology allows installers to quickly identify unpressed connections during pressure testing, reducing installation errors and improving overall system reliability.

Key Features:

• 1 in x 1 in coupling with integrated stop
• Flame-free press connection for fast installation
• Lead-free copper construction for potable water systems
• EPDM sealing element for secure, leak-resistant performance
• Smart Connect technology for easy leak detection during testing
• Built-in stop ensures correct pipe insertion depth
• Compatible with ASTM B88/B75 copper tubing
• Ideal for residential and commercial plumbing systems

Trusted by professionals worldwide, Viega ProPress fittings deliver speed, safety, and long-lasting reliability for modern plumbing installations.