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Single-seal Manhole Cover HYDR’O Ductile D400 class
Ductile Iron Single-Seal Access Hatches – 400 kN | EN 124-2 Certified
HYDR’O is a single-seal square watertight access cover (D400) made of ductile iron, designed to ensure effective odor-tightness by preventing the escape of rising gases from underground drainage and sewer systems.
Based on a single-lid design, HYDR’O offers high durability and ease of operation. It can be configured with optional features such as locking systems and underground network identification, either factory-assembled or installed on site to meet specific project requirements.
Engineered for medium to heavy traffic areas, this D400 ductile iron access cover combines strength and long-term performance, making it an ideal solution for secure and efficient stormwater and wastewater management.
Clear opening (mm) : 300×300 ; 400×400 ; 500×500 ; 600×600
Clear opening (mm)
- 305×305
- 400×400
- 500×500
- 600×600
Certification
Complies with the requirements of EN-124-2 / NF-110 standard.
Third-party certified with Afnor NF mark
Place of use
D400 : Carriageways of roads (including pedestrian streets), hard shoulders and parking areas, for all types of road vehicles.
Material
Cover and frame: Spheroidal (ductile) cast iron EN-GJS-500-7.
Water based black paint.
Drawings and dimensions
Table and references
Code
Description
Version
O (mm)
A x A’ (mm)
C (mm)
H (mm)
e (mm)
Cover (kg)
Total (kg)
Surface (kg/m2)
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