Country Style WD51 Manhole Cover Lids for WD51 Frame – MWSB Approved - Solid & Grated Options

Country Style Manhole Cover Lids - MWSB Approved

The WD51 Series Country Style Manhole Covers — available in both Solid (WD51S) and Grated (WD51G) configurations — deliver rugged, MWSB-approved, cast-iron performance for municipal and rural infrastructure. Engineered to fit the WD51 Country Style Manhole Frame, these covers provide reliable access, long-term durability, and application-specific functionality. Choose the Solid Cover for sealed, infiltration-resistant installations, or the Grated Cover for high-flow drainage environments. Both options are built from ASTM A48 Class 30B gray cast iron, ensuring consistent, code-aligned performance across stormwater, wastewater, and general utility access points.

WD51S Solid Manhole Cover – MWSB Approved

The WD51S Solid Cover is a heavy-duty, MWSB-approved cast-iron manhole cover engineered for secure access control in municipal and rural applications. Built from ASTM A48 Class 30B gray cast iron, this solid plate design offers superior load-bearing performance while preventing water, debris, and sediment infiltration.

The cover features two precision-formed pickholes for safe lifting, along with raised 25 mm x 25 mm x 3 mm traction squares spaced evenly across the surface (visible in the plan view). These raised features improve slip resistance and increase service safety for field crews.

With a diameter of 572 mm (22.5") and a weight of 60 kg (133 lbs.), the WD51S delivers the mass, durability, and compliant geometry required for long-term municipal installations.

WD51S Solid Cover – Specifications

WD51G Grated Country Style Manhole Cover – MWSB Approved

The WD51G Grated Cover is a high-performance, MWSB-approved drainage-style manhole cover built for situations where effective surface water removal is essential. Manufactured from ASTM A48 Class 30B gray cast iron, this grate is engineered for durability while promoting fast, controlled drainage.

The top grate structure features 1" wide slots spaced 1" apart (as shown in the plan view), ensuring efficient flow while maintaining debris resistance. Its serrated layout and curved profile provide load-bearing capability suitable for municipal service roads, rural grids, and utility access points.

With a 572 mm (22.5") diameter and a lighter 53 kg (117 lbs.) weight, the WD51G allows easier handling while maintaining structural integrity and full compatibility with the WD51 frame.

WD51G Grated Cover – Specifications

FAQs for Country Style WD51S Solid Cover & WD51G Grated Cover

1. Are these covers compatible with the WD51 Country Style Manhole Frame?

Yes. Both the WD51S (Solid) and WD51G (Grated) covers are designed to seat directly into the WD51 frame’s 527 mm (20.75") opening.

2. Are both covers MWSB approved?

Yes — both models are fully MWSB-approved for municipal and water stewardship applications.

3. What is the difference between the Solid and Grated versions?

• WD51S Solid: Prevents infiltration, ideal for sanitary systems, low-flow areas, and environments requiring sealed access.

• WD51G Grated: Allows water drainage through the grate openings, ideal for stormwater, ditches, washouts, and rural drainage points.

4. Are both covers made from the same material?

Yes. Both models use ASTM A48 Class 30B gray cast iron, chosen for heavy-duty municipal applications.

5. Can these covers handle traffic loads?

Yes. The structural cast-iron construction and weight of each cover make them suitable for municipal, roadway, and utility service traffic (within standard municipal load expectations).

6. Do the covers include pickholes for lifting?

• WD51S Solid Cover: Yes, two 25 mm pickholes.

• WD51G Grate Cover: No pickholes; lifting is typically performed using grate hooks or commercial grate lifters.

7. Are the covers interchangeable?

Yes. Both models share the same outside diameter and seating geometry, allowing either to be used on the same WD51 frame.

8. What applications best suit each cover?

• Solid: Sanitary sewer access, confined-space access points, areas needing sealed containment.

• Grated: Stormwater entry, drainage, culverts, ditch crossings, and rural water management.

9. Can these covers be used in paved and unpaved environments?

Absolutely. Both designs are suitable for gravel, asphalt, or mixed-base installations commonly found in municipal and rural regions.