Gravity sewer

Gravity sewerage - the foundation of an efficient sewage disposal system

Gravity sewerage is the basis for effective sewage disposal in buildings and housing estates.   At Onninen, we understand its key role perfectly. We offer comprehensive solutions in this area. Our products meet the highest standards of quality and durability.

In our daily practice, we encounter various challenges. Customers often ask about selecting the right elements. We advise on pipe diameters and materials. We help design optimal slopes. Our team provides knowledge and experience at every stage of implementation.

Gravity sewer components - a wide selection in the Onninen offer

In our assortment you will find a full range of products. We offer pipes, fittings, manholes and accessories. We focus on proven brands: Kaczmarek, Funke, Wavin, Karmat and Kessel. They provide the highest quality and reliability.

PVC external sewage pipes are the basis of every system.   They are available in various diameters: 110 mm, 160 mm, 200 mm, 250 mm and 315 mm. We also offer innovative solutions. An example is multilayer PVC pipes with increased strength. For particularly demanding installations, we recommend pipes with a K-type LOCK seal.

• PVC Sewer Pipes - Various Diameters and Lengths
• Fittings - elbows, tees, reductions
• Inspection and connection manholes
• Manholes and covers - different load classes
• Gutters and linear drainage systems

Designing gravity sewage systems - key aspects

When designing a gravity sewage system, many factors must be taken into account. Correctly determining the slopes is crucial. They ensure the free flow of sewage. Selecting the appropriate pipe diameters is also important. They must ensure the appropriate capacity of the system.

In our daily practice we see how important precision is at the planning stage.   Even minor errors can lead to serious problems. That is why we offer support from experienced specialists. They help you choose the best solutions.

Recently, we faced a challenge when designing a large housing estate. The terrain was characterized by a varied topography. This required particularly careful design of the network. We used innovative solutions. We used multilayer PVC pipes with increased circumferential stiffness. This allowed us to reduce the number of inspection chambers.

Installation and operation of gravity sewage system

Correct assembly is the key to long-term and trouble-free operation of the system. At Onninen, we offer not only products, but also professional advice. Our experts share their knowledge on correct assembly techniques. They advise on the selection of appropriate tools and accessories.

Our experience shows that proper operation is as important as installation.   Regular inspections and cleaning extend the life of the installation. They help avoid costly breakdowns. Our offer also includes products for pipe maintenance and cleaning.

1. Preparation of the ground and excavation
2. Correct connection of pipes and fittings
3. Installation of inspection chambers
4. Backfilling and compacting the soil
5. System tightness tests

In the case of reorganization of existing sewage systems, we most often encounter challenges. They concern the integration of new elements with existing infrastructure. Our wide range of products allows for the selection of appropriate solutions. They ensure the compatibility and effectiveness of the modernized system.

Onninen recommends the use of comprehensive system solutions.   They ensure full compatibility of the elements. They guarantee the highest tightness and durability of the installation. In our offer you will find complete systems from renowned manufacturers. They allow the implementation of even the most demanding projects.

Many customers ask us about the possibilities of modernizing existing systems. In such cases, we often recommend the use of PVC pipes with a K-type LOCK seal. They provide exceptional tightness of connections. They are ideal for difficult ground conditions. They work well with high groundwater levels.

Gravity sewerage is the foundation of efficient sewage disposal. Its correct design and implementation is crucial. At Onninen, we offer not only the highest quality products. We also provide professional advice and technical support. We invite you to contact our specialists. They will help you choose the optimal solutions for your project.