DN/OD 200
In this category, you will find sewer pipes and fittings with outer diameter DN/OD 200, designed according to standards for buried wastewater and sewer pipe systems in civil engineering. The products are made from a high-performance material with high strength and ensure durable installations.
Buy DN/OD 200 — Guide & Tips
The DN/OD 200 category includes 96 items for sewer pipe systems with an outer diameter of 200 millimeters. This dimension corresponds to the standardized nominal sizes according to DIN EN 1401 and is mainly used in civil engineering for buried wastewater pipes. The material – usually PVC-U or PP – offers high rigidity combined with good chemical resistance. Important for your planning: DN/OD 200 denotes the outer diameter (OD = Outer Diameter), while the inner clear width (DN) is slightly smaller due to the wall thickness. When purchasing, pay attention to the stiffness class: for standard underground installations, SN4 is sufficient; for heavy traffic loads or greater cover depths, we recommend SN8. The connection is usually made via socket joints with rubber ring seals – this technique ensures tight yet flexible pipe connections that can compensate for ground movements. Typical applications are house connection lines, collection lines in residential areas, or rainwater drainage. Before ordering, check whether you also need fittings such as bends, branches, or inspection pipes – these components are available in the same DN/OD 200 version and ensure a consistent system.
A common mistake when buying: Do not confuse DN/OD 200 with the PN rating (pressure rating). Sewer pipes are not designed for pressurized lines – they are exclusively for free gravity drainage. Therefore, ensure sufficient pipe slope of at least 0.5 to 2 percent, depending on the wastewater volume. For private properties, a gradient of 1:50 (2 cm per meter) is usually sufficient. Also plan for adequate cleaning openings – every 15 meters or at each change of direction. The DN/OD 200 standard is compatible with common sewer pipe systems as long as you stay within the same standard family. If you want to combine pipes from different manufacturers, use suitable gaskets and check the dimensional tolerances. Our tip: For larger projects, always order a spare pipe end and an additional gasket – this will prevent nasty surprises on the construction site.
Popular DN/OD 200 Products
These three product types cover the most important applications in the DN/OD 200 range: The 45° branch is required when you want to create a lateral connection with low flow resistance – for example, for a washing machine drain in the basement. The cleaning pipe is mandatory at every change of direction and in straight sections every 15 meters; it considerably facilitates pipe cleaning using a spiral or high-pressure nozzle. The oil-resistant seal is the right choice when the wastewater contains fats, oils or chemical residues – for example in commercial kitchens or workshops. Standard EPDM seals would become brittle over time. Best to combine the components from the same system to avoid dimensional tolerances and ensure a permanently tight connection.
Frequently asked questions about DN/OD 200
What does DN/OD 200 mean exactly?
DN/OD 200 is a standard designation for sewer pipes: 'DN' stands for nominal diameter (diameter 200 mm referring to the inner width), 'OD' stands for outer diameter, which is decisive for push-fit socket systems. The actual inner diameter is about 188 mm depending on wall thickness (e.g., 5.9 mm for SN4). The system is standardized according to DIN EN 1401 and is compatible with all standard KG pipes and fittings as long as the same standard is observed.
Which pipe stiffness do I need for my application?
The stiffness class (SN) indicates the resistance to earth and traffic loads. For normal garden areas with a cover of up to 1.50 meters, SN4 (4 kN/m²) is sufficient. For road crossings, parking lots or higher cover (up to 4 meters), use SN8 (8 kN/m²). Pipes of the same stiffness class can be combined without problems – however, do not mix different SN classes in one strand, as the deformation behavior differs.
Can I connect DN/OD 200 with other pipe diameters?
Yes, there are transition pieces and reducers for this. A common scenario is connecting a DN/OD 200 collection pipe to a DN/OD 160 downpipe of a house. Use a 200/160 branch or a 160/200 reducer for this. Ensure that the gaskets fit the respective outside diameter on both sides. A direct transition to pressure-resistant pipes (e.g., PE pressure pipes) is only possible with special couplings – professional planning is recommended here.
At what depth must I lay a DN 200 sewer pipe?
The minimum cover is generally 80 cm to protect the pipe from frost and mechanical stress. In frost-free zones (from 80 cm depth) the line is safe. Under traffic areas, you must place the pipe invert deeper – often 1.20 meters or more, depending on the load class. In any case, use a pipe bed of sand or gravel 2/8 mm and compact the side fill in layers. The slope should be at least 0.5% to ensure self-cleaning.
More categories in the sewer pipe system
DN/OD 200 is a medium diameter in the sewer pipe system. For smaller house connections and downpipes, DN/OD 110 is often used – it is suitable for washbasins, toilets, and rainwater downpipes. One size larger is DN/OD 160, which is often used as the main line in multi-family buildings. Both sizes are available in the same materials and stiffness classes as DN/OD 200. If you are planning a complete wastewater system from the gutter to the property connection, it is worth taking a look at the overarching Category Drainage Pipe System. There you will find all nominal widths from DN/OD 110 to DN/OD 315 as well as matching fittings, seals, and accessories. The choice of the correct diameter depends on the connected usable area and the number of drainage points – as a rule of thumb: a DN/OD 200 line easily supplies up to 10 residential units.