VIEGA soldered tee 12 x 12 x 12 mm, model 101435, copper piping fitting

VIEGA soldered tee 12 x 12 x 12 mm is a copper piping fitting designed to create a reliable three-way junction in plumbing and heating systems. Intended for use with 12 mm copper tubing, this tee provides a permanent soldered connection suitable for potable water and central heating installations. Its straightforward geometry and copper construction ensure good thermal conductivity and corrosion resistance typical of copper pipework.

Advantages

This soldered tee offers a durable, leak-resistant joint when installed by soldering, producing a compact and rigid connection without moving parts. The uniform copper construction ensures compatibility with standard copper tube and fittings, and soldered joints provide long-term stability in domestic and commercial water and heating systems. The fitting's dimensions make it suitable for installations where space is limited and a neat, compact tee connection is required.

Suitable for

• Creating a tee branch in potable water distribution systems with 12 mm copper tubing
• Branching runs in central heating circuits where soldered copper connections are specified
• Domestic and light commercial plumbing installations requiring permanent, fixed joints
• Repairing or extending existing copper pipework of the same diameter

When it may not be suitable

This soldered tee is not suitable for systems where flexible or demountable connections are required, such as push-fit or compression fittings. It is also not appropriate for pipework sizes other than 12 mm; using it with adapters may introduce additional joints that negate some benefits of a direct soldered connection.

Key specifications

• Material: copper
• Connection type: soldered (capillary) joints
• Dimensions: 12 x 12 x 12 mm (nominal pipe diameters)
• Application: potable water and heating systems

How to use

Prepare the copper pipe ends by cutting squarely, deburring, and cleaning the outer surface and inner fitting sockets. Apply an appropriate flux to the joint areas, assemble the tee onto the pipes, and heat evenly until the solder flows into the capillary gaps to form a sealed joint. Allow the assembly to cool naturally and inspect the joints for continuous solder fillets and leaks before placing the system into service. Follow local plumbing codes and use correct brazing or soldering temperatures and materials suitable for potable water systems.

What to consider before purchase

• Confirm pipe outer diameter and compatibility with 12 mm copper tubing
• Ensure soldering access and sufficient working space for heating and assembly
• Verify suitability for potable water if required by materials and solder alloy used
• Consider whether a soldered fixed joint meets maintenance and future modification needs

Usage recommendations

Use approved lead-free solders and fluxes where potable water approval is required, and follow manufacturer and local code guidelines for soldering copper fittings. Inspect and pressure-test the system after completion and use appropriate personal protective equipment during soldering operations.