NORDILOC S

The perfect spiral lining system for circular gravity mains.
Application area:
Sewer Lines, Stormwater Mains, Stormwater Drains and Culverts
Diameter:
DN 600 - 3000
Material:
PVC-U
Installation:
Machine-Wound

The Advantages at a Glance

  • Structural Performance: Fully structural (WRc Type II) lining solution designed to withstand external loads independently of the host pipe condition. The steel-reinforced profile provides long-term load-bearing capacity with a minimum design life of 50 years.

  • Installation in Live Sewer: Can be installed under live flow conditions, typically accommodating up to 30% flow, minimizing service disruption.

  • Installation Efficiency: Installed from one manhole to another without the need for insertion pits or extensive excavation, enabling a fully trenchless solution.

  • Hydraulic Performance: The smooth internal PVC surface enhances flow efficiency after rehabilitation, even with a reduction in diameter.

  • Quality & Consistency: No resin impregnation or curing is required. Structural performance is achieved through factory-controlled PVC extrusion and steel reinforcement mechanically locked to the PVC profile during the winding process, ensuring consistent quality.

  • Durability & Chemical resistance: PVC material provides excellent resistance to corrosion, abrasion, and a wide range of chemicals typically found in wastewater environments.

  • Reduced construction footprint and installation time : Minimizes disruption to surrounding infrastructure, traffic, and the public, while enabling faster installation compared to traditional methods. 

Product Characteristics

Suitable for Large Diameter Pipeline

Typically used for pipelines ranging from DN600 to DN3000.

Fully Structural WRc Class II Liner

Nordiloc S is a spirally wound liner designed to independently withstand all external loads, including soil load, groundwater pressure, and live loads, regardless of the condition of the host pipe.

Composite PVC–Steel Structure

Nordiloc S consists of: High-performance PVC profile (ASTM D1784 compliant) & Integrated steel reinforcement. This combination provides high stiffness and strength, enabling use in large diameter applications.

Enhanced Hydraulic Performance

Despite a reduction in internal diameter after rehabilitation, Nordiloc S can improve overall flow capacity due to its smooth PVC inner surface with a low Manning's roughness coefficient (n ≈ 0.009).

Technical Specifications

  1. Structural Classification: Fully Structural WRc Type II Liner

  2. Material: - High-performance PVC conforming to ASTM D1784, reinforced with steel to enhance structural performance

  3. Certifications: WRc approved system

  4. Design Standards: ASTM F1741, AS/NZS 2566

  5. Testing Standard:

  • ISO 9969 – Ring stiffness

  • ISO 9967 – Creep ratio / creep factor

  • ASTM F1741 – Water tightness and dimensional verification

  • ASTM D1784 – PVC cell classification

  • ASTM F1697 – Leak Tightness Test

  • WIS-4-35-01 – Serviceability

  • EN 295-3 – Abrasion Test

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