VIEGA stainless steel reducing tee 28x15x28 mm model 435950

VIEGA stainless steel reducing tee 28x15x28 mm model 435950 is a corrosion-resistant plumbing fitting designed to join two 28 mm pipes with a 15 mm branch. Manufactured from inox stainless steel, the reducing tee is intended for use in potable water, heating and cooling systems where a reliable, long-lasting branch connection with a change in pipe diameter is required. The compact design supports installations in visible and concealed piping runs and resists oxidation and deposits commonly encountered in domestic and light commercial systems.

Advantages

The stainless steel construction offers high corrosion resistance and mechanical strength compared with many non-ferrous alternatives. The reducing tee provides a stable transition between pipe diameters without the need for multiple fittings, reducing potential leak points. Its smooth internal surfaces are intended to minimise flow disruption and scaling, while the precise dimensions ensure consistent fit and alignment with compatible 15 mm and 28 mm tubing.

Suitable for

• Potable water distribution in domestic and commercial buildings
• Heating system pipework and radiator branches
• Cooling and chilled water circuits in HVAC installations
• Applications requiring a durable, corrosion-resistant branch connection between 28 mm and 15 mm pipes

When it may not be suitable

This reducing tee is intended for 28 mm to 15 mm connections and is not suitable where other diameters or transition types are required. It may not be appropriate for systems requiring specialized chemical compatibility beyond standard potable water and HVAC fluids; verify media compatibility if unusual fluids or aggressive chemicals are present.

Key specifications

• Material: stainless steel (inox) for corrosion resistance
• Connection arrangement: reducing tee with two equal 28 mm outlets and one 15 mm branch
• Typical applications: potable water, heating and cooling systems
• Surface: smooth internal surfaces to reduce flow disturbance
• Physical form: compact tee fitting for inline and branch pipe connections

How to use

Install the reducing tee at the location where a 28 mm main run requires a 15 mm branch. Prepare pipe ends according to the chosen joining method, ensure clean contact surfaces, and insert or secure pipes into the corresponding 28 mm and 15 mm ports following the manufacturer's recommended joining technique (e.g., press-fit, soldering, welding or mechanical coupling depending on the system). After installation, perform pressure testing and leak checks in accordance with applicable plumbing or HVAC regulations.

What to consider before purchase

• Confirm compatibility with your pipe material and joining method (press, solder, weld or coupling).
• Verify that 28 mm and 15 mm diameters match the pipes in your system.
• Check suitability for the system media (potable water, heating fluid, glycol mixes) and operating temperature/pressure ranges.

Usage recommendations

Use appropriate installation tools and follow local codes. After fitting, flush the system to remove debris and perform a pressure test to ensure a leak-free connection. Consider insulating exposed sections in heating or chilled water applications to reduce heat loss and condensation.