Backwater protection and lifting station in Obertshausen
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Why is backflow protection important?
The following video illustrates the consequences of heavy rainfall without backflow protection and explains and shows what measures can be taken to prevent flooding and backwater.
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We support you with all problems relating to your Kessel lifting unit or backflow preventer. Whether installation, repair, maintenance or spare parts procurement – contact us and we will help you!
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Our backwater protection and lifting station services
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Comprehensive, well-founded advice on the installation of simple backflow protection systems and, in difficult cases, the installation of lifting systems
Repair of all common brands
Our strength: rapid spare parts procurement
Regular inspection and maintenance of the installed systems
What is backwater?
Backwater occurs when the sewer network is temporarily overloaded, for example during heavy rainfall. The water level in the sewer can then rise to street level and beyond. Without adequate backwater protection, wastewater can enter buildings through low-lying discharge points.
What is the backwater level?
The backwater level corresponds to the highest expected water level in the connected sewer. In most cases, it is considered to be street level plus a safety margin of around 15 cm. Drainage fixtures located below this level must be protected against backwater.
How does a lifting station work?
How does a backwater valve work?
Backwater valves are integrated into the pipe system and close automatically when water flows back from the sewer. There are mechanically operated versions as well as electrically controlled models with extended functions. Electrically operated systems are usually required in frequently used rooms.
Difference between lifting stations and backwater valves?
Backwater valves prevent backflow but do not actively transport wastewater. For regularly used discharge points below the backwater level, a lifting station is required. Backwater valves are suitable for rarely used areas where no wastewater is discharged during backwater conditions.
What should be considered when selecting appropriate backwater protection?
Whether a backwater valve or a lifting station is suitable depends, among other factors, on the type of wastewater, the location of the discharge points, the gradient towards the sewer and the intended use. Various technical standards apply, such as DIN EN 13564 and DIN EN 12050. A sound decision can usually only be made following an on-site inspection.
Can lifting stations and backwater valves be combined?
Lifting stations and backwater valves can be used in the same building, provided they serve different discharge points. A case-by-case assessment is necessary to evaluate technical suitability and usage.
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Maintenance of backwater valves
and lifting stations in Obertshausen
Regular maintenance of backwater valves and lifting stations is defined by standards and often required by insurers. In Obertshausen, maintenance is carried out in accordance with applicable technical regulations – on request, also as part of a maintenance contract.
Maintenance requirements according to standards:
Backwater valves in accordance with DIN EN 13564-1:
Lifting stations in accordance with DIN EN 1986-3:
Quarterly servicing for commercial premises
Biannual servicing for multi-family dwellings
Annual servicing for single-family homes
Continuous maintenance of
your Jung Pumpen System offers:
High operational reliability, low failure rate
Long service life
High efficiency of the system
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Questions and answers
Do you have questions
about Backwater protection in Obertshausen?
What options are available to prevent backflow?
There are two main systems:
- Backwater protection: Mechanical flaps or valves that automatically close to prevent sewage from flowing back into the building.
- Lifting system: Actively pumps wastewater above the backwater level, providing reliable protection against backflow.
When is a backflow preventer sufficient?
A backflow preventer may only be used if:
- the wastewater connections to be protected (e.g., floor drains in the basement) are located below the legally specified backflow level.
- there is a sufficient natural gradient to the public sewer,
- an alternative toilet is available above the backflow level,
- local regulations do not impose any restrictions.
Caution: Improper installation can lead to serious water damage!
When is a lifting system required?
A lifting system is required if:
- Sewage containing fecal matter (e.g., from toilets) accumulates below the backflow level.
- The slope to the sewer is insufficient.
- Drainage must continue to function even in the event of backflow. (This is the safest method of backflow protection.)
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