PE100 to Stainless Steel Female Thread Transition Adapter SDR11

  Datasheet (PDF) |   Product Range | Instructional Video

The Georg Fischer ELGEF Plus PE100 to stainless steel female thread transition adapter provides a factory-assembled, permanent connection between polyethylene pipelines and threaded metal equipment. Engineered for utility infrastructure and industrial piping networks, this SDR11 transition fitting features high-density polyethylene fused to a precision-machined V2A stainless steel threaded insert. It operates reliably at continuous pressures up to 16 bar for water and 10 bar for gas.

Technical specifications

This SDR11 transition fitting is engineered for electrofusion jointing into polyethylene pipelines while offering an internal female Rp thread for valves, pumps, and metal pipework. The factory-pressed joint between the PE100 spigot and stainless steel insert withstands high mechanical pull-out forces and operational torsional stresses without leakage.

• Operating pressure: 16 bar for water distribution and 10 bar for combustible gas networks
• Compatible pipeline SDR range: SDR 9 through SDR 11
• Jointing method: Electrofusion socket welding utilizing standard 4 mm connector pins
• Impact resistance: High Charpy notched impact strength down to -40 degrees Celsius
• Available dimension range: Diameters from 20 mm to 63 mm with female threads from 1/2 inch to 2 inches

Materials and standards

Fabricated from certified virgin PE100 polyethylene and corrosion-resistant V2A stainless steel, this transition adapter delivers exceptional chemical resilience and complete immunity to galvanic corrosion. It complies fully with international standards for pressure piping including EN 12201-1 for potable water supply and EN 1555-3 for gas distribution systems.

The component holds prestigious approvals including DVGW, SVGW, KIWA, and ACS, confirming material safety and longevity in subterranean installations. BigWeld is an authorised Georg Fischer distributor, supplying the complete ELGEF Plus and ecoFIT thermoplastic piping systems across Europe with comprehensive batch certificates, technical sheets, and material traceability for critical engineering installations.

Installation and jointing

Installation of the PE spigot end is performed using ELGEF Plus electrofusion couplers equipped with integrated visual melt indicators to verify welding completion. The female cylindrical thread enables direct connection to male-threaded metal valves, instruments, or rigid fittings without requiring specialized transition flanges.

During assembly, installers must use appropriate thread sealant compatible with stainless steel and avoid exceeding recommended installation torque limits. The torsion-resistant internal design ensures that subsequent mechanical tightening of threaded metal connections does not distort or loosen the factory-bonded polyethylene interface.