Our B125 waterworks manhole cover delivers medium‑duty performance with a 450 mm diameter clear opening and a slim 34 mm frame height, fully certified to BS EN 124:2015 Class B125 for 125 kN (12.5 t) test loads. Constructed from premium ductile iron, it balances strength and corrosion resistance while remaining lighter than traditional cast‑iron designs. The cover features a single continuous seal groove, sealed keyways, and integral lifting keyholes for secure, dust‑tight performance and easy maintenance.
🎯 Product Overview
Designed specifically for waterworks, footways, pedestrian precincts, and car parks, this B125 cover meets Group 2 loading requirements and carries the BSI Kitemark for quality assurance. The 450 mm clear opening fits standard inspection chambers, while the 34 mm frame height allows flush installation with minimal surfacing build‑up. Its ductile‑iron construction ensures durability under occasional vehicular traffic without excessive weight.
🚀 Key Features
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BS EN 124:2015 Class B125: Rated for 125 kN static loads (12.5 t), ideal for Group 2 traffic areas.
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Slim 34 mm Frame: Low‑profile collar reduces tripping risk and blends with paving finishes.
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Single Continuous & Labyrinth Seal: Dual‑seal design blocks debris, odours, and water ingress for waterworks integrity.
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Safety Keyways: Prevent accidental disengagement of lifting keys, enhancing on‑site safety.
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Anti‑Slip Surface: Chequer‑plate pattern ensures secure footing in wet or dry conditions.
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Durable Finish: Standard black bitumen coating with optional epoxy or powder‑coated colours for bespoke projects.
📐 Technical Specifications
| Specification | Details |
|---|---|
| Standard | BS EN 124:2015 (EN 124‑2, cast iron) |
| Load Class | B125 (125 kN / 12.5 t) |
| Clear Opening Diameter | 450 mm |
| Frame Height | 34 mm |
| Material | GGG‑500 Grade Ductile Iron |
| Sealing | Single continuous groove + labyrinth seal |
| Keyways | Integral safety keyways |
| Surface Pattern | Chequer‑plate anti‑slip design |
| Finish | Standard black bitumen (optional epoxy/powder coatings) |
🛠️ Applications
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Footways & Sidewalks: Low‑profile design reduces trip hazards in pedestrian corridors.
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Pedestrian Plazas & Parks: Sealed construction prevents debris buildup and water ingress in public spaces.
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Car Parks & Driveways: Supports occasional vehicular traffic up to 12.5 t while maintaining flush surfacing.
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Waterworks Installations: Labyrinth seal and continuous groove protect underground chambers from moisture and odours.
🔧 Installation & Maintenance
Installation is straightforward: set the drop‑in frame into a prepared aperture, ensuring the collar rests evenly on the surrounding surface. No concrete mortar bedding is required for flush seating. Periodic greasing of the seal groove and inspection of keyways will sustain airtight performance and ease of removal over the cover’s service life.
⭐ Why Choose Our B125 Waterworks Manhole Cover?
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Regulatory Compliance: Fully Kitemarked to BS EN 124:2015 B125 standards for safety and legal assurance.
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Enhanced Safety: Labyrinth seal and safety keyways minimize odour escape and accidental key loss during maintenance.
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Aesthetic Integration: Slim frame and chequer‑plate finish blend with both traditional and contemporary paving schemes.
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Longevity: UV‑stable bitumen coating and ductile‑iron construction deliver low lifecycle costs.
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Global Availability: Stocked by leading suppliers for rapid dispatch and international shipping.
For detailed drawings, custom badging, or project quotations, please contact our technical sales team—your partner in durable, compliant waterworks access solutions.
| Family: | Drainage |
| Packaging Qty: | 60 |
| Product Type: | Access Covers |
| Certified Class: | B125 |
| Standards: | EN124 |
| Surface Finish: | ANTI-SLIP OTHER SURFACE |
| Clear Opening: | 450 mm |
| Flange Outer Diameter: | 550 mm |
| Frame Height: | 34 mm |
| Weight: | 19 kg |
| Cover/Grating Shape: | Round |
| Cover Diameter: | 490 mm |
| Hatch Cover/Grating Qty: | 1 |
| Hinged: | No |
| Opening Direction: | Vertical |
| Frame Style: | Monoblock as Cast |
| Frame Shape on Vertical Section: | Flat |
| Frame Surface Protection By: | Water-Based Paint |
| Installation Type: | To Concrete Pre Cast |
| Installation On: | Concrete Clear Opening Width Maxi 380 |
| Handling Key: | LARGE BS LIFTING KEY / 710059 |
| Locking Key: | N/A |
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 |
