Fitting Tee (Socket Weld) SiGMA-Li PERTTW1612 — PE-RT/PE 16 x 1/2" x 16

Socket-weld tee fitting SiGMA-Li PERTTW1612 is designed for PERT/PE pipe systems and provides a T-shaped branch connection with dimensions 16 x 1/2" x 16. Made from PE-RT/PE materials, this fitting joins two 16 mm pipes with a central 1/2" run intended for a threaded or compatible transitional connection. It is intended for potable hot and cold water distribution, underfloor heating manifolds and general plumbing installations that require a welded socket connection for reliable, low-profile pipe routing.

Advantages

The fitting is manufactured from PE-RT/PE which offers flexibility and resistance to thermal stress and pressure cycling. Its socket-weld design ensures a secure, leak-resistant joint when fused correctly, reducing the need for mechanical fittings in the run. Compact dimensions and standardized 16 mm connections make it suitable for tight installation spaces and easy integration with common PERT/PE systems. The inclusion of a 1/2" branch accommodates standard threaded components or transitional adapters for mixed-material systems.

Suitable for (tasks / use cases)

• Distribution of potable hot and cold water in residential and commercial buildings
• Connections to underfloor heating manifolds and branch circuits
• Plumbing installations in tight spaces where compact fittings are needed
• Systems requiring a combination of welded sockets and a threaded or transitional branch

Key specifications

• Material: PE-RT/PE
• Connection type: socket-weld on main runs, 1/2" threaded or transitional branch
• Pipe interface dimensions: 16 mm x 1/2" x 16 mm
• Application: potable water distribution, underfloor heating, general plumbing
• Design: T-shaped branch fitting for three-way connection

How to use

Prepare pipe ends by cutting square and removing burrs, then clean and dry the mating surfaces before assembly. Install the 16 mm pipes into the socket ends and perform socket welding or fusion according to the selected fusion method and applicable standards. For the 1/2" branch, fit the appropriate threaded component or transitional adapter and seal threads using a suitable sealing method if required. Allow joints to cool and cure as specified by welding/fusion equipment manufacturer before pressure testing.

Usage recommendations

Use certified fusion equipment and follow local plumbing codes and manufacturer fusion parameters. Verify compatibility of threaded or transitional components with PE-RT/PE materials, and perform pressure and leak tests after installation. Avoid exposure to direct sunlight for prolonged periods and protect against mechanical damage during and after installation.