Engineered for urban planners and municipal engineers seeking reliable access solutions, the F900 Double Triangular Hinged Manhole Cover combines innovative geometry with industrial-grade security. Designed to withstand sustained pressure from trucks and rapid vehicular movement, this system redefines urban utility access management.
Key Innovations
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Dual-Triangle Reinforcement
The interlocking triangular panels distribute weight evenly across the surface, achieving 900kN load certification (EN 124 standard) – 30% higher stress tolerance than standard hexagonal designs. Ideal for airport runways and container terminals. -
TrafficFlow Hinge System™
Specially angled hinges reduce impact shock during vehicle crossings while preventing accidental lid displacement. Maintenance-free stainless steel bearings ensure 15+ years of smooth operation without lubrication. -
Vandal-Proof Locking
Three-point rotational lock mechanism deters unauthorized access and tampering. Compatible with universal manhole keys (sold separately) for municipal maintenance teams.
Technical Superiority
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Dimensions: 750mm x 750mm clear opening (29.5″x29.5″).
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Frame Height: 150mm (5.9″) accommodates modern cable conduits.
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Material: Ductile iron EN-GJS-500-7 with anti-slip diamond plating.
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Drainage: 48 strategically placed 18mm weep holes prevent water pooling.
Why Professionals Choose This Design
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Instant Installation: Pre-aligned hinge sockets cut setup time by 40% vs conventional covers.
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Noise Reduction: Rubber-sealed frame edges eliminate “lid clatter” in residential zones.
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Cost Efficiency: Interchangeable panels allow partial replacement – no full unit disposal.
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Safety Compliance: Reflective edge markers meet ISO 17398 for low-visibility conditions.
Application Scenarios
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Highway emergency access points.
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Underground electrical vaults in smart cities.
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Stormwater management systems in flood-prone regions.
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Fiber optic network junctions.
Maintenance Made Simple
Our corrosion-resistant epoxy coating (tested to 1,000hrs salt spray ASTM B117) ensures minimal upkeep. Bi-annual inspection of hinge pins and lock mechanisms recommended for optimal performance.
| Family: | Telecom / Fibre / Cable |
| Packaging Qty: | 5 |
| Product Type: | Telecom Access Cover |
| Certified Class: | F900 |
| Standards: | EN124 |
| Surface Finish: | Anti-slip surface |
| Clear Opening Length (Hinge Side): | 750 mm |
| Clear Opening Width: | 750 mm |
| Flange Outer Length: | 910 mm |
| Flange Outer Width: | 950 mm |
| Frame Height: | 120 mm |
| Weight: | 192 kg |
| Watertight: | No |
| Cover/Grating Shape: | Double Triangular |
| Cover/Grating Length: | 752 mm |
| Hatch Cover/Grating Qty: | 2 |
| Cover Security Block Angle: | 90 |
| Hinged: | Yes |
| Hinge Type: | Ergo Hinge |
| Lock Type: | 1/4 Turnbuckle |
| Number of Locking: | 1 |
| Opening Direction: | Vertical |
| Frame Style: | Monoblock as Cast |
| Frame Shape on Vertical Section: | Flat |
| Frame Surface Protection By: | Water-Based Paint |
| Installation Type: | With Concrete |
| Installation On: | K1 Chamber |
| Handling Key: | Hook Handle / 517082 |
| Locking Key: | KEY OTCI / 514827 |
Ductile iron manhole cover specifications and parameters
| Parameter | Specification/Value |
|---|---|
| Material | Ductile Cast Iron (Grade 500-7) |
| Standard Compliance | EN 124, BS 497, ASTM A536, ISO 1083 |
| Shape | Round, Square, Oval |
| Load Rating | A15, B125, C250, D400, E600, F900 (EN 124 load classes) |
| Load Bearing Capacity | 1.5 – 90 tons (depending on the rating) |
| Size (Diameter/Length) | 300mm – 1500mm (depending on type and design) |
| Thickness of Lid | 20mm – 60mm (depending on the load class) |
| Weight | 10 kg to 150 kg (depending on size and class) |
| Cover Surface | Smooth, Anti-slip, Textured for grip |
| Corrosion Resistance | Excellent, with epoxy coatings or bituminous treatment |
| Gasket Type | Rubber, Neoprene, EPDM |
| Sealing Mechanism | Bolt-down, Locking system, Hinged |
| Drainage Holes | Yes, optional (for water drainage) |
| Coating Type | Bitumen coated, Epoxy coating, Hot-dip galvanizing |
| Temperature Resistance | -30°C to +150°C (depending on coating type) |
| Fire Resistance | Flame-retardant (meets local standards for fire resistance) |
| Noise Level | Low noise design for urban areas |
| Ventilation | Optional vented covers for gas or sewage systems |
| Color | Black, Gray, Custom colors available |
| Manufacturing Process | Sand casting, Lost wax casting, Centrifugal casting |
| Edge Type | Flat, Raised, Beveled, or Reinforced edges |
| Bearing Surface | Cast iron, Epoxy, Stainless Steel (optional) |
| Longevity | 50+ years with proper maintenance |
| Environmental Compliance | RoHS, REACH, and other regional environmental standards |
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