Compression Reducing Tee SiGMA-Li PERT 25x16 mm – welded reducing tee for PE-RT piping

Welded reducing tee SiGMA-Li PERT 25x16 mm is a welded reducing tee intended for PE-RT piping systems. The fitting provides a 25 mm main run with a 16 mm reduced branch, designed specifically for forming a reduced branch connection in hot- and cold-water distribution and underfloor heating systems built with PE-RT pipes. The fitting is manufactured for welded joints to ensure a secure, leak-resistant connection when installed with compatible PE-RT pipes of the corresponding diameters.

Advantages

The welded design eliminates the need for mechanical connectors at the joint, reducing potential leak points and simplifying the installation where a diameter transition is required. Compatibility with PE-RT material ensures reliable thermal and chemical stability within typical domestic and light commercial water distribution and floor heating applications. The compact geometry of the reducing tee allows neat routing in confined spaces and integration into service risers or manifolds.

Suitable for

• Creating reduced-diameter branches in PE-RT hot- and cold-water distribution
• Underfloor heating manifolds and branch connections
• Service risers and concealed building installations
• Repairs or modifications where a 25 mm to 16 mm reduction is required

Key specifications

• Main run diameter: 25 mm
• Branch diameter: 16 mm
• Material compatibility: PE-RT piping systems
• Connection type: welded joint fitting for permanent fusion with pipes
• Application: hot- and cold-water distribution, underfloor heating

How to use

Prepare pipe ends by cutting square and removing burrs, then verify pipe diameters and wall thickness match the fitting dimensions. Use the recommended welding or fusion technique for PE-RT material according to installer guidelines and equipment manufacturer instructions. Insert the prepared pipe ends into the fitting sockets, apply heat fusion until correct melt and alignment are achieved, and allow the joint to cool undisturbed to form a leak-resistant connection. After cooling, inspect the weld visually and perform pressure testing in line with relevant standards and local regulations.

Usage recommendations

Use certified PE-RT pipes of matching diameters and follow the fusion equipment manufacturer's parameters for temperature and time. Avoid mechanical stress on newly welded joints during cooling. For systems with higher temperatures or pressures, verify that the overall system design and material selection meet required operating limits and local codes.