Viega 78057 Propress Copper Coupling with Stop 1 Inch

Product Description

The VIEGA 78057 is a 1-inch ProPress copper coupling with stop, designed for press-fit connections in commercial and residential plumbing systems. The integrated stop allows consistent pipe insertion depth without measuring, which reduces installation errors on the job. Smart Connect technology embeds a leak-detection indicator that reveals any unfired connections during pressure testing, giving technicians a reliable QC checkpoint before the system goes live. This fitting is installed by licensed plumbers working on copper supply lines where solder-free, tool-pressed connections are required or preferred.

This coupling is suited for potable water distribution, hydronic heating, and general plumbing applications where copper press fittings meet code. It connects two copper pipe ends of equal 1-inch diameter and is compatible with standard ProPress jaw tooling. The with-stop design makes it appropriate for tight-access installations where confirming full insertion visually is difficult.

Key Features

• Integrated pipe stop ensures consistent insertion depth and reduces misalignment
• Smart Connect technology allows visual identification of unfired connections during pressure testing
• ProPress connection type eliminates open flame, reducing fire risk and installation time
• Copper construction for compatibility with copper supply and distribution piping
• 1-inch nominal size fits standard 1-inch copper tube

Compatibility

Designed as an OEM-style press fitting for use with 1-inch copper pipe in standard plumbing installations. Requires a compatible ProPress pressing tool and jaw set rated for 1-inch connections.

Installation Notes

Installation is performed by a licensed plumber using an approved ProPress pressing tool. Shut off and depressurize the water supply before cutting into any existing line. Pipe ends must be deburred and clean before insertion to ensure a proper seal. After pressing, perform a pressure test to confirm all connections are fully fired, using the Smart Connect indicator to identify any missed presses.

Technical Specifications

• Size: 1 inch
• Material: Copper
• Connection Type: ProPress
• Application: Plumbing

Standard Information

• Brand: VIEGA
• Manufacturer Part Number: 78057