Hatches and inlets

Manholes and inlets - key elements of sewage infrastructure

Manholes and inlets are an integral part of every sewage system.   At Onninen, we understand their importance perfectly. Our extensive range includes a wide selection of top quality products. We provide solutions tailored to the diverse needs of our customers. Regardless of the specifics of the project, we have the right products.

Our range includes round and square cast iron manholes. We also offer cast iron curb and roadway and sewage inlets. For complete systems, we recommend concrete cones and cast iron manhole bodies. The offer is complemented by necessary accessories. These include flat rubber seals or metal clamps.

Variety of manholes and inlets - adapted to each investment

In our daily practice we observe the growing demands of investors.   Customers are looking for durable, functional and aesthetic products.   To meet these expectations, we offer a wide range of solutions. Concrete manholes are suitable for lighter applications. Cast iron models provide the highest durability in difficult conditions.

We often come across the question of choosing the right product. It is crucial to consider several important factors. These include expected loads, environmental conditions and aesthetics. Our experienced advisors will be happy to help you choose the optimal solution. We provide professional support at every stage of project implementation.

• Cast iron manholes - ideal for high traffic areas
• Sewer inlets - effective drainage of rainwater
• Concrete manholes - an economical solution for smaller loads
• Accessories - seals, clamps for a complete system

Renowned brands of manholes and inlets in the Onninen offer

Our assortment includes products from recognized manufacturers.   We work with brands such as Kzo, Kaczmarek, Kessel, Hl and Wavin. This guarantees the highest quality and reliability of the offered solutions. Each product undergoes rigorous testing before being introduced to the market.

Our experience shows that customers value proven solutions. That is why we focus on cooperation with renowned suppliers. Their products are characterized by excellent technical parameters. They ensure long-term operation without the need for frequent replacements or repairs.

We recently used the Kessel inlet system in a project for a large housing estate. This solution proved to be perfect in difficult ground conditions. It ensured effective drainage of rainwater even during heavy rainfall.

Criteria for selecting manholes and inlets - how to choose the optimal solution?

Selecting the appropriate manhole or inlet is crucial to the functionality of the system.   At Onninen we advise taking into account several important factors. The first is the load class. It determines the product's resistance to pressure. The next aspect is the material of manufacture. It affects durability and corrosion resistance.

Many customers ask us about the dimensions of manholes and inlets. This is important due to compatibility with existing infrastructure. We also pay attention to the method of installation and maintenance. Products that are easy to install and service save time and money.

1. Determination of load class (A15, B125, C250, D400)
2. Material selection (cast iron, concrete, plastics)
3. Adjusting dimensions to existing infrastructure
4. Taking into account environmental conditions (e.g. aggressive sewage)
5. Assembly and service aspects

In the case of reorganization of urban space, we most often recommend hatches with filling. They allow for aesthetic integration with the surroundings. At the same time, they provide full functionality and durability. This solution is becoming increasingly popular among architects and designers.

Onninen recommends using system solutions from a single manufacturer.   This ensures full compatibility of components and optimal operation of the entire system. In our offer you will find complete systems from renowned brands. They guarantee the highest quality and reliability.

Our experience shows that a well-thought-out selection of manholes and inlets is the key to success. Properly selected products ensure trouble-free operation for many years. This translates into savings related to fewer repairs and replacements.

At Onninen, we focus on comprehensive solutions. In addition to the manholes and inlets themselves, we offer a full range of accessories. Flat rubber seals DN150 or test adapters are essential elements of the system. We also provide technical support in the selection and installation of products.

Our experience shows that each investment is unique.   That is why we approach the needs of each client individually. We analyze the specifics of the project and propose optimal solutions. Our experts will be happy to advise on the selection of appropriate products.

At Onninen, we constantly monitor market trends and technological innovations. We regularly update our offer with the latest solutions. This ensures that our customers always have access to the highest quality products. We guarantee comprehensive service - from consulting to delivery to the construction site.

We invite you to familiarize yourself with the full range of manholes and inlets available at Onninen. Our technical advisors will be happy to answer any questions. They will help you choose the optimal solutions for your project. We guarantee professional support and the highest quality products.