Designed for civil engineers and utility managers prioritizing contamination control, the B125 900x900mm square manhole cover delivers unmatched sealing performance in high-footfall and light vehicular zones. Its simplified single-seal architecture addresses common pain points in urban drainage and telecom access management.
Core Advantages
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AquaLock Seal™ Technology
A proprietary single-compound gasket creates 360° perimeter compression, blocking 99% of surface water infiltration—critical for preventing groundwater pollution in flood-prone areas. -
Optimized Load Distribution
Reinforced rib patterns beneath the 40mm-thick surface achieve B125 certification (125kN load capacity), supporting delivery vans and emergency vehicles without frame deformation. -
Anti-Rattle Design
Precision-machined edges eliminate gaps between cover and frame, reducing noise pollution in residential neighborhoods near storm drains.
Technical Specifications
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Clear Opening: 900mm x 900mm (35.4″x35.4″) square.
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Frame Depth: 180mm (7.1″) for modern deep-lying pipe networks.
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Material: EN-GJL-250 grey iron with bitumen coating (optional epoxy upgrade).
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Weight: 98kg (216lbs) – deters casual theft attempts.
Problem-Solving Features
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Tool-Free Access: Lift points compatible with standard manhole hooks (no specialty keys required).
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Slip Resistance: Cross-hatched surface texture maintains 55+ BPN wet/dry friction (exceeds ISO 13473-1 standards).
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Future-Proof Design: Pre-cast slots for retrofitting IoT sensors or gas detection modules.
Ideal Installations
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Shopping mall pedestrian walkways.
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EV charging station cable conduits.
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Coastal city sewage treatment plants.
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5G fiber optic maintenance shafts.
Sustainability Benefits
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100% recyclable materials with 30% recycled content.
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15-year corrosion warranty against road salts and chemical runoff.
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Interchangeable with legacy 900x900mm frames (retrofit kit available).
| Family: | Municipal |
| Packaging Qty: | 10 |
| Product Type: | Connection Boxes |
| Certified Class: | B125 |
| Surface Finish: | Anti-slip surface |
| Clear Opening Length (Hinge Side): | 900 mm |
| Clear Opening Width: | 900 mm |
| Flange Outer Length: | 1040 mm |
| Flange Outer Width: | 1040 mm |
| Frame Height: | 69 mm |
| Weight: | 131 kg |
| Watertight: | No |
| Cover/Grating Length: | 985 mm |
| Hinged: | No |
| Handling Key: | Hook Handle / 517082 |
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 |
