Reducing Tee PEX Sigma-LI MT322032 32x20x32 mm pipe fitting

Reducing Tee PEX Sigma-LI MT322032 32x20x32 mm pipe fitting is a three-way connector designed to join PEX pipes with a reduction on the branch line. The fitting provides a 32 mm main run with a 20 mm branch outlet, enabling a controlled diameter transition for water supply and heating installations. It is intended for use where a smaller-diameter feed is required from a larger main, and it is compatible with common PEX installation methods—such as press-fit or push-fit—depending on the piping system used.

Advantages

The reducing tee offers a compact, space-saving solution for creating a branch with a smaller diameter without requiring additional adapters. Its standardized dimensions ensure predictable hydraulic behaviour and straightforward integration into PEX networks. The fitting is suitable for both horizontal and vertical runs and simplifies distribution of supply lines by providing a single-piece junction that reduces the number of joints compared with separate couplings and reducers.

Suitable for

• Branch connections in residential water supply systems
• Heating circuit branches in low- and medium-temperature systems
• Plumbing installations where a reduction from 32 mm to 20 mm is required
• Retrofit or new-build projects using PEX piping

Key specifications

• Main run diameter: 32 mm
• Branch diameter: 20 mm
• Material type: suitable for PEX piping systems (plastic polymer component compatible with PEX)
• Connection type: designed for press-fit or push-fit installation depending on system fittings
• Application: cold and hot potable water distribution and heating circuits
• Orientation: three-way (T) reducing junction

How to use

Prepare the PEX pipes by cutting squarely and deburring the ends. Select the appropriate installation method for the PEX system in use—press-fit or push-fit—and ensure compatible rings or adapters are available if required. Insert the pipes into the corresponding 32 mm and 20 mm ports of the tee, following the manufacturer’s installation procedure for secure sealing and mechanical retention. After installation, pressure-test the circuit to confirm leak-free joints before placing the piping into service.

Usage recommendations

Use this reducing tee in accordance with applicable plumbing codes and the specifications of the PEX system being installed. Avoid mechanical overstress and ensure proper support and thermal expansion allowance for the connected pipes. Perform a pressure test after installation and inspect joints periodically as part of routine system maintenance.