Filter bag for sludge dewatering 1.25 m³ | WINKLER
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fast draining
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robust
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simple handling
Delivery time: 1-2 working days
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Filter bag for sludge dewatering 1.25 m³ – F-BAG XXL (gravity filter bag)
Mobile sludge dewatering for high volume flows
The WINKLER F-BAG XXL (1.25 m³) filter bag for sludge dewatering is the high-performance solution for the reliable separation of solids and liquids in industrial wastewater. As a gravity-fed filter bag , it operates without electricity, pumps, or maintenance – ideal for companies that need to dewater large quantities of sludge quickly and economically.
The F-BAG XXL is designed for tough B2B use: robust filter material, secure lifting loops and high drainage performance ensure that processes run stably and downstream systems are protected from blockages.
Typical areas of application
The filter bag is particularly suitable for applications where sludge needs to be dewatered directly on site – mobile, uncomplicated and efficient:
- Car washes (cars, commercial vehicles, train/ICE washing facilities)
- Concrete processing and concrete plants (sawing/grinding water, drilling/flushing water)
- Recycling companies (construction waste, metal, plastic, process water)
- Industrial wastewater and production processes (pre-filtration, sludge separation)
This filter bag is at home in leading industries where enormous quantities are involved. These include raw material processing in the chemical industry , large-scale civil engineering and landscaping projects, and intensive processes in the transport and logistics sector. It is also the most efficient solution in the construction sector , agriculture , and industrial water purification for energy and environmental purposes .
How it works: Gravity filtration in practice
The application is deliberately kept simple and is also suitable for changing locations:
- The contaminated water/sludge-water mixture is introduced into the filter bag (e.g. from a container, trough or via pump).
- Solids are retained in the filter material, and the water drains away in a controlled manner.
- After dewatering, the bag is removed and the sludge is disposed of properly.
Due to its large usable volume of 1.25 m³ and high filter area, the F-BAG XXL is particularly suitable for large batches and continuously accumulating sludge.
Your advantages in B2B use
The F-BAG XXL combines high capacity with industrial-grade robustness. This makes it a reliable solution when drainage needs to be reliably planned – even under changing conditions.
- High capacity: 1.25 m³ usable volume for large flow rates.
- Industrial quality: Robust design for demanding slurries.
- Chemically resistant: Suitable for many industrial process waters (acid and alkali resistant).
- Efficient drainage: High water permeability for short process times.
- Safe handling: Reinforced straps with 280 mm overhang for easy recovery and transport.
Which filter bag is the right one? Size comparison of the F-BAG series
The appropriate size depends primarily on your sludge volume, batch size, and the structural conditions. A comparison will help you quickly classify the different filter bag options:
| variant | Usable volume | Area of application | Typical application |
| F-BAG M | 0.125 m³ | Small batches, highly mobile | Short-term deployments, maintenance work, or small amounts of mud in limited space. |
| F-BAG L | 0.5 m³ | Medium-sized volume flows | Regular drainage in trade and industry with a good balance between size and handling. |
| F-BAG XL | 0.8 m³ | Large batches | For applications with higher sludge volumes and longer dewatering intervals. |
| F-BAG XXL | 1.25 m³ | Industrial use | Maximum capacity for large volume flows and heavy industrial sludge. |
| F-BAG Special Size (GE Vernova) | Custom size | Special installation situations | Custom-fit filter bags for shaft systems or special containers with limited height. |
In addition to standard sizes , custom-made filter bags are also available. Special sizes are particularly suitable for existing systems or special installation situations where standard dimensions do not fit.
WINKLER F-BAG XXL Filter Bag: Technical Details
| material | Polypropylene needle felt |
| Usable volume | 1.25 m³ |
| dimension | Height 1.00 m |
| Base area | 1.00 × 1.25 m |
| straps | protruding 280 mm |
| Load classes | 400 kg / 600 kg / 900 kg |
| Filter fineness | nominal 100 µm, acid and alkali resistant |
| Water permeability | 135 l s-1 m-2 at 100 mm water column |
| Delivery time | 1–2 working days |
Consultation from a filter technology specialist
Are you planning an industrial-scale dewatering system using the F-BAG XXL? Our filter technology experts will assist you with the technical design. We ensure reliable and cost-effective solids separation, even under maximum load conditions.
FAQ – Filter bag 1.25 m³ for industrial sludge dewatering
Frequently asked questions about sludge dewatering with filter bags for large volume flows
The 1.25 m³ filter bag is designed for applications requiring reliable and economical dewatering of large quantities of sludge. Its large usable volume and extensive filter surface make it particularly suitable for industrial applications with continuous sludge flow. Here you will find answers to frequently asked questions about the use of large-volume gravity filter bags.
For which applications is a 1.25 m³ filter bag particularly suitable?
This size is often used when smaller filter bags would need to be changed too frequently or when larger batches need to be dewatered.
What are the advantages of a large-volume filter bag?
Thanks to the large filter surface area, the water flow remains stable even with larger amounts of sludge.
Can the filter bag be filled continuously?
Filling can be done, for example, from collection containers, troughs or pump systems.
How do you safely remove a filled filter bag?
After extraction, the dewatered sludge can be disposed of properly.
When is a filter bag with a usable volume of 1.25 m³ worthwhile?
This size is therefore particularly suitable for industrial plants that require reliable and economical sludge dewatering.
