Transition Coupler Electrofusion PE100/Brass SDR11 Male Thread

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The Georg Fischer ELGEF Plus PE100 and brass electrofusion male transition coupler provides a durable, pressure-tight transition from high-density polyethylene pipeline infrastructure to metallic valves, pumps, and threaded fittings. Engineered for utility piping networks, this SDR11 transition fitting incorporates an integrated electrofusion socket on the polyethylene end and a robust external male thread on the brass component, offering reliable mechanical stability and pressure containment across potable water networks and combustible gas distribution systems.

Technical specifications

This SDR11 electrofusion transition coupler is rated for nominal operating pressures up to 16 bar for water conveyance and 10 bar for natural gas distribution. The electrofusion socket incorporates precision-embedded heating wire technology and standard 4 mm terminal pins to deliver uniform thermal distribution during welding.

• Pressure class rating: PN16 for water services and PN10 for gas distribution
• Dimensional ratio: SDR11 standard wall configuration
• Fusion terminals: 4 mm welding connector pins with dynamic fusion indicators
• Alignment technology: Integrated pipe fixation mechanism for sizes up to d63 mm
• Joint construction: Torsion-resistant anchored brass male thread spigot
• Design lifetime: Estimated operational service span exceeding 100 years

Materials and standards

Manufactured from fully compounded virgin PE100 resin combined with premium CW617N brass, this fitting exhibits exceptional tensile strength and superior resistance to environmental stress cracking. The polyethylene body conforms to EN 12201-1 for water supply systems and EN 1555-3 for combustible gas supply infrastructure, carrying certified hygienic clearances including ACS, DVGW, KIWA, and KTW/W270.

The PE100 polymer exhibits a high Charpy notched impact strength of 83 kJ/m² at 23 degrees C and 13 kJ/m² at -40 degrees C, guaranteeing robust fracture mechanics and resistance against rapid crack propagation under extreme operational conditions.

Installation and jointing

Electrofusion jointing requires thorough pipe surface preparation, including mechanical scraping of the polyethylene outer oxidation layer, degreasing with an approved solvent, and insertion into the electrofusion socket up to the internal stop. Integrated pipe fixation clamps secure the assembly during welding and subsequent cooling cycles without requiring auxiliary external clamping equipment on pipe dimensions up to d63 mm.

Tapered or parallel male threads must be sealed using thread-sealing materials compatible with both brass and the conveyed fluid. Torsional tightening torque must be applied directly to the hexagonal flats of the brass fitting using appropriate wrenches, preventing mechanical twisting stresses from transferring directly onto the polyethylene fusion zone.