• Extreme Resistance (Class F900): Designed to withstand loads up to 900 kN, ensuring structural integrity in contexts where standard manhole covers would fail, such as airport taxiways.
• Total Stability: The triangular geometry of the covers ensures contact on three points, eliminating noise and subsidence caused by the rocking of the modules.
• Operational Safety: The automatic 90° lock and sequential opening protect personnel during inspections, preventing accidental closures or tampering with the subsidiary modules.
• Mechanical Protection: The locking bolt is protected by a recessed cap that prevents the accumulation of debris, ensuring the lock functions even in dirty or dusty environments.
• Durable Installation: The 150 mm high frame with a slotted perimeter flange ensures superior load distribution, minimizing cracks in the surrounding concrete.

The h638_106 model is exclusively intended for special infrastructures requiring the highest load capacity standards. It is the solution of choice for airports (runways and aircraft parking areas), port container terminals, heavy logistics areas and industrial zones with the transit of special vehicles. The wide clear opening of 750x2225 mm allows for the inspection of large technological chambers, underground power stations or primary hydraulic nodes.

Choosing this manhole cover means opting for the highest safety category available on the infrastructure market. With a structural weight of over 600 kg, the h638_106 model offers stability that only high-quality ductile iron can guarantee. Despite the massive weight, the modularity of the triangular covers allows for easy maneuverability of each individual element, making maintenance interventions efficient and safe over time, drastically reducing repair and replacement costs.

Is the manhole cover suitable for aircraft parking areas?

Absolutely yes. The F900 class is specifically regulated by UNI EN 124 for areas subject to very high axle loads, including airport pavements intended for the transit and parking of aircraft.

How many covers actually make up the module?

The modular configuration for the clear opening of 750x2225 mm involves the use of paired triangular covers to cover the entire length. The system ensures that, once the master cover is unlocked, the entire series can be opened safely following the mechanical sequence.

Does the lock require specific maintenance?

The locking system with a rotating bolt and helical spring is designed to withstand heavy conditions. The recessed protection cap shields the mechanism; however, periodic lubrication is recommended based on the frequency of opening and the type of environment (e.g., port salinity).