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With freight traffic expected to rise significantly in the coming years, road transport will continue to be the backbone of logistics. In response to these growing demands, ACO has further developed the Multitop manhole cover, building on its proven strengths in weight, handling, wear resistance, and joint integrity.
Now, we’re introducing new product benefits that meet the needs of modern infrastructure:
Quiet. Air-permeable. Non-slip.
The manhole covers of the ACO Multitop system weigh just 43 kg - less than half the weight of conventional covers. This represents a weight reduction of over 50%, making handling easier and installation more efficient.
Despite their reduced weight, safety remains uncompromised: the screwless locking mechanism ensures secure positioning and reliable performance under traffic loads, contributing to overall road safety.
The traffic-safe, screwless locking mechanism of the ACO Multitop system is made from highly wear-resistant plastic, combining long-term durability with ease of use. Designed for minimal maintenance, it can be operated using standard tools, ensuring quick and straightforward access without compromising safety.
While wear is inevitable, it can be effectively managed. In the ACO Multitop system, the cushioning insert is positioned in the frame, not in the cover. This design ensures that only the contact surface of the cover is subject to wear. The advantage is clear: covers are easier and faster to replace than frames, significantly reducing overall maintenance effort.
This approach eliminates the need for extensive construction work or traffic disruptions during servicing. Most importantly, it leads to substantially lower maintenance costs over the product’s lifecycle.
The ACO Multitop manhole covers are also available as part of the innovative roll-in Bituplan system. This system is specifically designed to decouple the manhole cover from the underlying structure, effectively isolating it from the dynamic loads of increasing road traffic.
Unlike conventional installations, the Bituplan cover is not placed directly on the manhole head. Instead, it is rolled or vibrated into the road surface, ensuring a flush, seamless fit without the need for additional construction measures. This eliminates depressions in the road surface that can cause noise disturbances and structural stress.
The result:
In areas prone to flooding or high water levels, manhole covers must meet stringent requirements to prevent water ingress and protect underground infrastructure. The ACO Multitop RSS/TWD system offers a robust solution that is both watertight and backflow-proof, ensuring reliable performance under challenging conditions.
In flood-prone areas or locations with sensitive supply shafts, covers must offer combined watertight and backflow resistance. This prevents moisture from penetrating lower levels and stops water from escaping into upper areas. The ACO Multitop RSS/TWD system was developed with a focus on user-friendly, low-maintenance technology, fully compatible with existing Multitop components.
Installation Guidelines
Locking Mechanism
In drainage construction, manhole covers with a clear width of 605 mm have long been standard. However, this small diameter often becomes a bottleneck—making access difficult, time-consuming, and potentially hazardous. Rescue operations are complicated, and ladders cannot be safely used in narrow shafts.
To improve safety, simplify access, and enable easier tool handling, the trend is shifting toward manhole covers with a clear width of 800 mm. ACO meets this demand with the Multitop LW 800 product range—offering optimal solutions for modern infrastructure.
Despite their larger size, LW 800 covers weigh only approx. 74 kg (or 78 kg without ventilation holes), allowing for manual handling without lifting equipment. The maintenance-free, screwless locking mechanism made of highly wear-resistant plastic ensures secure, traffic- and vandal-proof operation with standard tools.
Additional benefits include:
In drainage construction, manhole covers with a clear width of 605 mm are widely used. For applications requiring maximum load capacity, ACO offers models within the Multitop system that meet the highest load class F 900.
These covers are engineered to perform under extreme conditions, combining robust technical quality with user-friendly handling. Weighing just 43 kg, they are the lightest in their class, enabling easy installation and maintenance without lifting equipment.
As with all Multitop covers, they feature:
The ACO Multitop manhole covers are also available as part of the innovative roll-in Bituplan system. This system is specifically designed to decouple the manhole cover from the underlying structure, effectively isolating it from the dynamic loads of increasing road traffic.
Unlike conventional installations, the Bituplan cover is not placed directly on the manhole head. Instead, it is rolled or vibrated into the road surface, ensuring a flush, seamless fit without the need for additional construction measures. This eliminates depressions in the road surface that can cause noise disturbances and structural stress.
The result:
In areas prone to flooding or high water levels, manhole covers must meet stringent requirements to prevent water ingress and protect underground infrastructure. The ACO Multitop RSS/TWD system offers a robust solution that is both watertight and backflow-proof, ensuring reliable performance under challenging conditions.
In flood-prone areas or locations with sensitive supply shafts, covers must offer combined watertight and backflow resistance. This prevents moisture from penetrating lower levels and stops water from escaping into upper areas. The ACO Multitop RSS/TWD system was developed with a focus on user-friendly, low-maintenance technology, fully compatible with existing Multitop components.
Installation Guidelines
Locking Mechanism
In drainage construction, manhole covers with a clear width of 605 mm have long been standard. However, this small diameter often becomes a bottleneck—making access difficult, time-consuming, and potentially hazardous. Rescue operations are complicated, and ladders cannot be safely used in narrow shafts.
To improve safety, simplify access, and enable easier tool handling, the trend is shifting toward manhole covers with a clear width of 800 mm. ACO meets this demand with the Multitop LW 800 product range—offering optimal solutions for modern infrastructure.
Despite their larger size, LW 800 covers weigh only approx. 74 kg (or 78 kg without ventilation holes), allowing for manual handling without lifting equipment. The maintenance-free, screwless locking mechanism made of highly wear-resistant plastic ensures secure, traffic- and vandal-proof operation with standard tools.
Additional benefits include:
In drainage construction, manhole covers with a clear width of 605 mm are widely used. For applications requiring maximum load capacity, ACO offers models within the Multitop system that meet the highest load class F 900.
These covers are engineered to perform under extreme conditions, combining robust technical quality with user-friendly handling. Weighing just 43 kg, they are the lightest in their class, enabling easy installation and maintenance without lifting equipment.
As with all Multitop covers, they feature:
