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| Quantity: | |
|---|---|
| Specification(mm) | dn/dn1 | L | H | Item Number |
| 63 | 131 | 63 | LYGYL11-63 | |
| L75-90° | 75 | 150 | 70 | LYGYL11-75 |
| L90-90° | 90 | 173 | 78 | LYGYL11-90 |
| L110-90° | 110 | 195 | 80 | LYGYL11-110 |
| L125-90° | 125 | 211 | 77 | LYGYL11-125 |
| L140-90° | 140 | 228 | 79 | LYGYL11-140 |
| L160-90° | 160 | 245 | 80 | LYGYL11-160 |
| L180-90° | 180 | 267 | 80 | LYGYL11-180 |
| L200-90° | 200 | 290 | 85 | LYGYL11-200 |
| L225-90° | 225 | 321 | 90 | LYGYL11-225 |
| L250-90° | 250 | 356 | 105 | LYGYL11-250 |
| L280-90° | 280 | 395 | 105 | LYGYL11-280 |
| L315-90° | 315 | 430 | 110 | LYGYL11-315 |
| L355-90° | 355 | 463 | 110 | LYGYL11-355 |
| L400-90° | 100 | 519 | 110 | LYGYL11-400 |
| L450-90° | 450 | 570 | 110 | LYGYL11-450 |
| L500-90° | 500 | 610 | 110 | LYGYL11-500 |
| L560-90° | 560 | 700 | 125 | LYGYL11-560 |
| L630-90° | 630 | 772 | 130 | LYGYL11-630 |
| L710-90° | 710 | 911 | 180 | LYGYL11-710 |
| L800-90° | 800 | 1002 | 180 | LYGYL11-800 |
The HDPE 90° Equal Elbow 63-800mm for Rain Pipe is a heavy-duty directional fitting engineered to handle high-volume stormwater flow in large-scale drainage systems. Manufactured from PE100 grade HDPE compliant with EN 1519-1:2019 standards—the definitive specification for polyethylene soil and waste discharge systems—this elbow provides precise 90° turns while maintaining full flow capacity in rainwater pipelines. Available in sizes from 63mm to 800mm OD, it addresses the growing demand for large-diameter drainage solutions in urban flood control and infrastructure projects. Its flexible molecular structure absorbs ground movement and thermal expansion, preventing cracking that plagues concrete and metal alternatives. The elbow’s design life exceeds 50 years in buried applications, withstanding soil loads, traffic pressure, and aggressive environmental conditions .
The elbow features a reinforced radius (1.5× nominal diameter) that minimizes flow resistance, reducing pressure loss to less than 4% at peak stormwater velocities. This optimized curvature prevents turbulence and cavitation, protecting pipeline integrity during heavy rainfall events. The smooth inner wall (Ra <0.01mm) allows debris-laden rainwater to pass without clogging, reducing maintenance requirements compared to corrugated metal elbows.
Engineered for SN10 ring stiffness (10 kN/m²) in sizes ≥315mm, the elbow withstands external pressure from soil backfill and traffic loads when installed under roadways and parking areas. Formulated with 2.5% carbon black additive, it provides exceptional UV stability for above-ground installations, preventing photo-oxidation in direct sunlight. The HDPE material remains flexible at temperatures as low as -40°C and stable up to 60°C, ensuring year-round performance in extreme climates .
Designed for butt fusion installation in sizes ≥110mm and electrofusion for smaller diameters, the elbow creates homogenous joints with HDPE rain pipes that maintain the full structural integrity of the system. Fusion zones are reinforced with increased wall thickness to prevent stress concentration at joint areas. Each elbow includes precision-machined fusion surfaces and alignment markers to ensure proper installation in large-diameter pipeline runs.
This robust elbow is indispensable in large-scale rainwater management:
• Municipal Stormwater Networks: Directs high-volume drainage lines in urban flood control systems, handling peak flow rates during heavy rainfall events.
• Infrastructure Projects: Provides directional changes in highway drainage, tunnel water management, and airport runway drainage systems.
• Commercial Developments: Manages rooftop rainwater runoff in shopping centers, industrial parks, and logistics hubs with extensive impermeable surfaces.
• Coastal Protection: Integrates into seawall drainage systems and coastal storm surge management networks, resisting saltwater corrosion .
The PE100 HDPE construction and EN 1519-1:2019 certification ensure structural integrity in large diameters, while the reinforced radius design maintains hydraulic efficiency in high-volume stormwater applications .
Yes. The HDPE material is completely resistant to saltwater corrosion, making it ideal for coastal drainage systems and storm surge protection networks.
Sizes ≥110mm require butt fusion with a hydraulic fusion machine, ensuring precise alignment and temperature control (180-200°C). Professional certification in large-diameter fusion is recommended.
The flexible HDPE structure absorbs soil shifts and settlement, with a deflection capability of up to 5° without compromising joint integrity—far exceeding the rigidity of concrete elbows.
