VIEGA soldered tee fitting 18x15x15 mm model 101053 for copper piping

The VIEGA soldered tee fitting 18x15x15 mm model 101053 is a copper plumbing component designed to form a reliable branch from a main copper run. Intended for soldered joints, this tee creates a reduction from an 18 mm main line to two 15 mm outlets, enabling standard plumbing connections in potable water and heating systems. The fitting is manufactured for compatibility with common soldering techniques and copper pipe dimensions, providing a compact solution for changes in pipe diameter and direction within domestic and light commercial installations.

Advantages

This VIEGA soldered tee offers a precise dimensional reduction from 18 mm to 15 mm with a single-piece construction that simplifies installation and provides consistent joint geometry for soldering. Made of copper, the fitting ensures good thermal conductivity and corrosion resistance appropriate for water and heating circuits. Its standard sizing supports compatibility with widely used copper pipe and solder types, reducing the need for additional adapters or transitions in many plumbing layouts.

Suitable for

• Creating a branch from an 18 mm copper supply to two 15 mm copper runs
• Potable water distribution in residential and light commercial buildings
• Heating circuits where a reduction and branch from 18 mm to 15 mm is required
• Standard soldered copper plumbing installations

Key specifications

• Material: copper
• Configuration: tee with one inlet and two outlets
• Dimensions: 18 mm inlet, 15 mm outlets
• Connection type: designed for soldered joints
• Typical application temperature: suitable for potable water and heating systems

How to use

Prepare copper pipe ends by cutting square and cleaning internal and external surfaces with an appropriate abrasive or brush. Flux the fitting and pipe ends, insert the pipes fully into the tee sockets, and apply heat evenly to the joint while feeding solder until capillary solder fills the interface. After cooling, inspect each joint for complete solder coverage and proper mechanical seating before restoring system pressure. Follow local plumbing codes and manufacturer guidance for solder types and safe brazing or soldering practices.

Usage recommendations

Use lead-free solder and flux suitable for potable water systems, and ensure proper brazing/soldering techniques to prevent cold joints. Verify compatibility of pipe wall thickness and fitting socket depth; for heating systems, allow for thermal expansion and secure piping to prevent stress on joints.