Tee 90° reduced PE100 SDR11 PN16

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The Georg Fischer ELGEF Plus 90-degree reduced tee is an injection-moulded PE100 SDR11 spigot fitting engineered for creating branching connections in pressurised polyethylene piping systems. Designed for industrial networks, municipal utilities, and civil engineering contractors, this fitting provides long spigot outlets on both the main run and the branch. It delivers full compatibility with butt fusion and electrofusion techniques, supporting operating pressures up to 16 bar for water and 10 bar for combustible gas.

Technical specifications

This injection-moulded PE100 fitting is engineered to SDR11 dimensional standards, ensuring consistent wall thickness and dependable hydraulic capacity. It accommodates nominal main diameters from d63 to d315 mm with branch reductions extending down to d32 mm.

• Base material: High-density polyethylene PE100, SDR11 series
• Dimensional range: Main run d63–d315 mm (DN50–DN300) with branch outlets d32–d250 mm
• Wall thickness: SDR11 proportions ranging from 5.8/3.0 mm up to 28.6/22.7 mm
• Nominal pressure: 16 bar for water service and 10 bar for gas networks
• Certifications: FM 1613 approved at 15 bar on selected d315x90 mm and d315x110 mm variants

Installation and jointing

Long spigot ends allow installers to weld the tee directly using standard electrofusion couplers or butt fusion equipment without requiring extra transition adapters. The homogeneous polyethylene fusion eliminates mechanical joints and internal elastomer seals across the branch node.

The extended spigot lengths provide sufficient parallel clamping surface to slide electrofusion couplers fully into place under trench conditions. When butt fusion is selected, the spigot faces align smoothly with pipe strings using standard heated-tool butt welding machines. All joints must be prepared according to standard peeling, cleaning, and alignment protocols to guarantee high integrity under operational cyclic stresses.

Applications

The ELGEF Plus reduced tee is suited for critical pressurised fluid transport where chemical resistance, durability, and leak-free joint integrity are required. It serves underground and aboveground industrial networks, municipal infrastructure, and agricultural distribution mains.

Typical installations include potable water supply lines, natural gas transmission and distribution grids, commercial irrigation headers, cooling loops, and chemical process piping. The PE100 construction prevents internal corrosion, scaling, and biological growth throughout its design life. This fitting is supplied across Europe by BigWeld, authorised Georg Fischer distributor.