Welded tee fitting SiGMA-Li PERTT20T — PE-RT polyethylene 20×20×20 (socket)

The Welded tee fitting SiGMA-Li PERTT20T is a three-way connector made from PE-RT polyethylene for plumbing and heating systems. The 20×20×20 mm socket configuration provides a compact branch point to split or combine fluid flow in piping networks. Designed for fusion/welding installation methods with compatible PE-RT pipes, this tee supports pressure applications where PE-RT material properties are required.

Advantages

This PE-RT welded tee offers uniform material compatibility with PE-RT piping, reducing the risk of joint incompatibility. Its socket design ensures a reliable welded connection when installed by appropriate fusion techniques, delivering a smooth internal flow path and minimal pressure drop. The fitting is corrosion-resistant, lightweight, and maintains dimensional stability under typical operating temperatures for plumbing and low-temperature heating circuits.

Suitable for

• Domestic and commercial potable water distribution
• Underfloor heating and low-temperature radiant heating systems
• Plumbing branches and manifold connections in PE-RT piping networks
• Pressure installations specified for PE-RT material

Key specifications

• Material: PE-RT (polyethylene raised temperature resistant)
• Configuration: 20×20×20 mm socket tee (three-way branch)
• Connection type: Socket for welded/fusion joining
• Application: Pressure piping for plumbing and heating
• Properties: Corrosion-resistant, lightweight, dimensionally stable under typical operating conditions

How to use

Prepare compatible PE-RT pipes by cutting square and deburring the ends before installation. Ensure pipe and fitting surfaces are clean and free from contaminants. Use the appropriate fusion welding method recommended for PE-RT materials—such as socket fusion or other heat-based joining techniques compatible with the fitting—to create leak-free joints. Follow accepted installation standards and allow adequate cooling time before applying pressure to the system. Verify alignment and support of connected pipes to avoid stress on the welded tee.

Usage recommendations

Install the fitting only with pipes and welding equipment specified for PE-RT to maintain joint integrity. Observe manufacturer and local plumbing codes for pressure ratings, temperature limits, and testing procedures after assembly.