PE Stop-off adapter ELGEF Plus d63mm SDR11

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The Georg Fischer ELGEF Plus PE stop-off adapter d63mm SDR11 is an engineered electrofusion utility component developed for reliable line-stopping, temporary flow isolation, and under-pressure maintenance across high-density polyethylene distribution networks. Fabricated from premium PE100 resin, this SDR11 fitting operates under a nominal pressure rating of 16 bar (PN16) for potable water applications and 10 bar for combustible natural gas infrastructure. Designated with manufacturer code 193 280 279, the DN50 fitting features an integrated polyethylene stop-off insert with a spigot outlet diameter of 63 mm, a dedicated internal sealing plug equipped with a resilient rubber seal, and a robust PVP retaining nut engineered with a G 2 3/4 inch thread profile. Designed for direct mounting onto Georg Fischer ELGEF Plus branch saddles across main pipeline sizes from d63 mm to d400 mm on SDR11 systems and from d110 mm to d400 mm on SDR17 pipes, the adapter provides an internal flow passage diameter d1 of 51 mm, an overall length L of 87 mm, and a compact installation z-dimension of 45 mm with an overall weight of 0.254 kg. When utilizing under-pressure drilling equipment on d63 mm and d75 mm main pipes, a maximum cutter diameter of 39 mm maintains optimal wall integrity while allowing smooth insertion of flow-stopping equipment. The PE100 spigot interface allows clean electrofusion joining, ensuring homogeneous, leak-tight connections resistant to corrosion and pressure fluctuations in municipal and industrial underground utility piping.