VIEGA transition coupling 42 mm x 6/4" soldered 117597

VIEGA transition coupling 42 mm x 6/4" soldered 117597 is a metal pipe fitting designed to create a permanent, soldered connection between pipes of different diameters. One end accepts a 42 mm pipe while the other connects to a 6/4" pipe, allowing reliable transitions in plumbing and heating systems. The coupling is intended for soldered joints and provides a durable mechanical and leak-resistant connection when installed by a qualified installer using appropriate soldering techniques.

Advantages

The coupling offers a sturdy, long-lasting connection suitable for potable water and heating circuits where a change of pipe size is required. Its soldered joint reduces the risk of leaks compared with threaded or push-fit alternatives and ensures a compact, low-profile connection. The design allows straightforward alignment of mismatched pipe sizes and is compatible with standard soldering processes used in professional plumbing.

Suitable for

• Residential and commercial plumbing systems where pipe diameter changes are needed
• Central heating installations and radiator connections
• Permanent soldered joints in copper or compatible metal piping

Key specifications

• Connection types: soldered on both ends
• One end diameter: 42 mm
• Other end diameter: 6/4"
• Material: metal suitable for soldered plumbing joints
• Application: potable water and heating systems

How to use

Prepare pipe ends by cutting square, deburring and cleaning to remove oxidation and contaminants. Apply appropriate flux to the mating surfaces and assemble the coupling onto the pipes ensuring correct insertion depth and alignment. Heat the joint uniformly with a suitable torch until the solder flows and forms a continuous fillet around the joint. Allow the assembly to cool naturally and then remove any remaining flux residues. Installation should follow local plumbing codes and industry best practices.

Usage recommendations

Use with compatible metal piping and solder approved for potable water or heating applications. Ensure the installer is trained in soldering techniques and that work is carried out in a well-ventilated area with appropriate safety measures. Inspect joints for proper solder flow and absence of gaps before placing the system into service.