Filter bag for drainage shafts
Reliable filtration in accordance with DWA-A 138
Our filter bags reliably protect drainage shafts from contamination. Made from high-quality geotextile and available in single-layer or double-layer designs, they ensure a lasting filter effect and compliance with the DWA-A 138 standard.
Single-layer filter bags
The single-layer filter bags combines high water permeability with stable filtration against sediments.
Double-layer filter bags
For more demanding requirements, double-layer filter bags offer improved filter performance. The inner and outer bags work together to effectively retain dirt particles and ensure the long-term functionality of the drainage shaft.
High filtration performance, standard-compliant design
As part of our shaft accessories for sewer construction, filter bags are a reliable filter element for any shaft structure. They combine high filtration performance with standard-compliant design, are robust, durable and optimised for sewer and civil engineering conditions. While the single-layer version impresses with its ease of use, double-layer filter bags offer additional protection against fine particles. The geotextile ensures stability and consistent quality throughout its entire service life.
Your benefits with our filter bags
Compliant with standards
Compliant with DWA-A 138, Section 4.
Effective filtration
Reliably retains sediments and solids.
Flexible selection
Single-layer for standard applications or double-layer for more demanding requirements.
Durable geotextile
Robust, needle-punched and resistant in civil engineering.
Optimal permeability
High water permeability and defined pore sizes for reliable function.
Frequently asked questions about filter bags
Are the filter bags compliant with standards?
What is the difference between single-layer and double-layer filter bags?
What material are the filter bags made of?
What pore sizes are available?
How high is the water permeability?
Can filter bags also be retrofitted?
