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Fully compliant, heavy duty PN16 ductile iron split puddle flanges engineered specifically for wastewater management, treatment plants, and concrete tank wall penetrations.
Manufactured to strict EN 598 standards, each two piece clamping fitting features a robust, high build fusion bonded red epoxy coating inside and out to safeguard against chemical aggression and ensure a maintenance free, leakproof seal within structural concrete elements.
Enhanced Protection: High chemical and abrasion resistance specifically formulated for aggressive external soil and concrete environments
Rigid Reliability: Two piece split design allows easy retrofitting and secure mechanical clamping to existing external pipe walls
Also available split puddle flange for potable water.
When constructing or modifying wastewater networks, preventing fluid migration through concrete structures is essential. Our ductile iron EN 598 split puddle flanges provide a stable, rigid thrust and thrust mitigation barrier designed to act as an external water stop when cast directly into concrete walls, handling high external pressure and ground movement without fracturing.
Unlike standard cast iron, ductile iron incorporates nodular graphite, giving the metal higher tensile strength and flexibility. This prevents catastrophic structural failures and ensures your critical infrastructure remains secure.
To withstand continuous exposure to aggressive domestic sewage, raw concrete chemistry, and corrosive soil conditions, these fittings are treated with an advanced chemical resistant epoxy coating. This protective red layer provides:
An exceptional barrier against hydrogen sulphide (H2S) gases, biogenic corrosion, and damp concrete environments
A durable external surface interface that prevents liquid path weeping along the pipeline’s outer diameter
Total structural encapsulation to eliminate weak spots at critical structural boundary lines
Every fitting in this range is engineered to meet rigorous manufacturing benchmarks, ensuring trouble free installation over standard line pipes or seamless integration into existing public utility or private networks:
EN 598 Compliance: Guarantees suitability and safety for ductile iron pipelines and fittings carrying wastewater and sewage
ISO 2531 Standard: Validates the pressure capabilities, dimensions, and tolerances of the castings
Mechanical Bolt Configuration: Engineered for an aligned, uniform clamping force around the carrier pipe to eliminate leakage paths
| Material | Ductile Iron | High tensile strength |
| Application | Wastewater & Sewage Systems | Optimised for concrete wall penetrations and thrust restraint |
| Pressure Rating | PN16 (16 Bar) | Engineered for high pressure systems |
| Manufacturing | ISO 2531 / EN 598 | Engineered for quality assurance |
| Design Profile | Two Piece Mechanical Split | Clamps externally onto standard OD pipes |
| Wall Thickness | Class K-12 / K-14 Equivalent | Heavy duty structural design for longevity |
| Coating | Fusion Bonded Epoxy (min. 250 Microns) | High resistance to chemical aggression and concrete corrosion |
| Sizes Available | DN80 to DN300 | Larger sizes on request |
While we maintain good stock levels of standard DN80 to DN300 PN16 flanged fittings at our Suffolk warehouse, we regularly source specialised dimensions, non standard branch reductions, or alternative pressure ratings (such as PN10 or PN25) for major infrastructure projects.
If you cannot find the precise specification required for your project design, contact our technical sales team on 01284 658770 or email your schedule to us for a competitive quote.
