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Specification(mm) | φD | L | φd | order number |
50 63 75 90 110 125 160 200 250 315 400 500 630 | 65 80 95 112 139 156 200 250 305 385 480 600 | 95 110 120 135 155 185 200 220 245 290 320 355 | 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 | LYDL11-50 LYDL11-63 LYDL11-75 LYDL11-90 LYDL11-110 LYDL11-125 LYDL11-160 LYDL11-200 LYDL11-250 LYDL11-315 LYDL11-400 LYDL11-500 LYDL11-630 |
The DN50-630 PN16 HDPE Fused 90° Elbow for Pipelines is a heavy-duty directional fitting engineered for high-pressure fluid transport in industrial, municipal, and infrastructure piping systems. Manufactured from PE100 grade HDPE—certified under EN 12201-1:2024 for pressure piping—it creates precise 90° turns while maintaining full flow capacity and pressure integrity. Rated for 16 bar (PN16) working pressure at 20°C, this elbow outperforms metal alternatives in corrosion resistance and flexibility, with a design life exceeding 50 years in buried and above-ground installations. Available in sizes from DN50 (63mm OD) to DN630 (630mm OD), it provides critical directional changes in large-diameter pipeline networks handling water, wastewater, and non-aggressive chemicals.
The elbow’s wall thickness is engineered using ISO 12162 calculation methods, ensuring pressure integrity across all sizes. Its reinforced radius (1.5× nominal diameter) reduces flow resistance and turbulence, minimizing pressure loss to less than 5% at design flow rates. This optimized geometry prevents cavitation and erosion in high-velocity systems, extending pipeline life.
Designed for butt fusion or electrofusion installation, the elbow creates homogenous joints with HDPE pipes that are stronger than the pipe material itself. The fusion zones are reinforced to maintain pressure rating through the joint, eliminating the weak points common in welded metal elbows. Each elbow includes fusion preparation guidelines to ensure proper joint formation.
Formulated with 2.5% carbon black for UV stability, the elbow withstands prolonged sunlight exposure in above-ground installations. It exhibits chemical resistance to pH levels from 2 to 12, making it suitable for mildly aggressive fluids, and retains flexibility at temperatures as low as -40°C, preventing winter cracking in cold climates. The material is also resistant to biofouling, reducing maintenance needs in wastewater applications .
This high-pressure elbow is indispensable in demanding pipeline systems:
Municipal Water Transmission: Directs large-diameter water mains in urban distribution networks.
Industrial Piping: Handles process water and cooling water in power plants and manufacturing facilities.
Wastewater Transport: Directs pressurized sewage lines in treatment plant infrastructure.
Infrastructure Projects: Provides directional changes in pipeline crossings under roads, railways, and waterways .
PN16 indicates the elbow is rated for 16 bar (232 psi) working pressure at 20°C, suitable for medium to high-pressure pipeline systems commonly found in municipal water transmission and industrial applications.
Unlike metal elbows that corrode, rust, or suffer galvanic damage, the PE100 HDPE elbow offers complete corrosion resistance, flexible operation under ground movement, and lighter weight (70% lighter than steel) for easier handling and installation.
The elbow works with both butt fusion (for large diameters DN110+) and electrofusion (for all sizes), creating permanent joints that maintain the full pressure rating of the pipeline system.
Yes. The elbow’s PE100 construction and reinforced design withstand external pressure from soil and traffic loads, meeting EN 12201-1 requirements for buried pressure pipelines in infrastructure applications.
