Infiltration shaft filter bag for rainwater & infiltration | WINKLER
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Safe operation
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Easy installation
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Easy and safe removal
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Infiltration shaft filter bag for rainwater filtration & infiltration (DN1000–DN2500)
Efficient surface drainage and sustainable soil protection
Sealed surfaces such as parking lots, industrial areas, and logistics centers accumulate numerous pollutants: tire abrasion, microplastics, particulate matter, leaves, and waste . Without pre-treatment, these particles enter the soil or downstream infiltration systems directly.
The WINKLER infiltration shaft filter bag is a highly effective and economical solution for rainwater filtration . It reliably removes solids from the rainwater before it seeps into the ground – entirely without costly modifications to the existing shaft system.
Further solutions for municipal applications can be found in the area of filter technology, traffic & logistics – street drains & rainwater .
Two-layer filter system for maximum cleaning performance
The filter system consists of two coordinated layers of polypropylene needle felt and combines coarse and fine filtration in one product:
- Internal filter (coarse structure): Retention of leaves, debris and coarse sediments
- External filter (fine structure): Separation of the finest particles down to 80 µm
This combination extends the service life and ensures the long-term infiltration performance of the shaft.
DWA-compliant rainwater treatment
The filter bag meets a throughput value of 0.5 according to DWA-M 153 and DWA-A 138. It therefore supports municipalities, planners and industrial companies in implementing applicable water management requirements.
It is particularly suitable for projects in:
- Filter technology construction
- Civil engineering & landscaping
- Environment & Energy
- Agriculture
- House, garden & pond
Easy installation and maintenance (DN1000 – DN2500)
Thanks to stable, circumferential tabs, the filter bag can be quickly and securely fixed in the seepage pit.
- Quick change: Lift out using tabs and pull rope – no special tools required
- Perfect fit: Available for DN1000, DN1500, DN2000, DN2500
- Special sizes: Individual production available upon request
Suitable accessories for secure installation
For a permanently stable and secure fastening, we recommend the specially designed Mounting kit for soakaway filter bags . The system allows for quick initial assembly and particularly efficient filter changes using carabiners and heavy-duty anchors. The galvanized components remain permanently in the shaft, significantly simplifying maintenance.
Your advantages at a glance
- High filtration performance: Retention of fine particles down to 80 µm
- Microplastic reduction: Effective protection of soil and groundwater
- Extremely robust: Tear-resistant, heat-set polypropylene (PP)
- Economical: Disposable system without structural modifications
- Quickly available: Short delivery time for ongoing projects
Technical details
| material | Polypropylene needle felt, two-ply |
| dimension | DN1000, DN1500, DN2000, DN2500 or custom-made |
| basis weight | 130 + 200 g/m² (total 330 g/m²) |
| Air permeability | 1200 l*dm⁻²*min⁻¹ |
| throughput value | 0.5 (DWA-M 153 / DWA-A 138) |
| Delivery time | 1–2 working days |
Expert advice for your rainwater infiltration system
Do you need a customized design for your construction or infrastructure project? Take advantage of our product consultation for filter technology . We support you in the compliant and cost-effective implementation of your drainage solution.
FAQ – Soakaway filter bag for rainwater and infiltration
Frequently asked questions about rainwater filtration in the soakaway
The infiltration shaft filter bag ensures that solids are reliably removed from rainwater before the water enters trenches or infiltration systems. This keeps infiltration systems functioning properly in the long term and reduces maintenance and siltation.
What is a seepage pit filter bag used for?
Typical areas of application include parking lots, industrial areas, commercial areas and paved courtyards.
What particles does the seepage pit filter bag retain?
This improves water quality and protects infiltration trenches and seepage systems from clogging.
For which shaft sizes is the filter bag suitable?
A precisely fitting design ensures a secure hold and even flow.
How is a seepage pit filter bag installed?
To change the filter bag, simply lift it out with a rope or hook and replace it.
How often does a seepage pit filter bag need to be changed?
Changing the drain in a timely manner ensures that the infiltration capacity is maintained and that no deposits form in the shaft.
