Drain Basket C3 Retention System for Plastic Pellets – 70 µm Complete Set

Precise Pellet Retention for Compact Speciality Catch Basins (DIN 4052)

Alongside standard road drains, many industrial sites also have compact drainage points. Our drain basket set C3 with a 70 µm micron rating was built exactly for these speciality catch basins (Form C per DIN 4052). It provides a highly effective way to implement EU Regulation 2025/2365 in a legally compliant manner, even at narrow or space-constrained drainage points. This model is a key part of our specialised plastic pellet retention systems.

The C3 system closes the security gap in areas where standard 450 mm buckets are too large. That makes it an essential part of a comprehensive retention strategy for Operation Clean Sweep audits.

Application Areas: Compact Industrial Drains

Model C3 (Ø 395 mm) is the ideal choice for specialised infrastructure on industrial sites, particularly in sectors such as Chemicals & Raw Materials and Energy & the Environment:

• Narrow drainage channels close to production.
• Speciality catch basins in warehouses and loading stations within Transport & Logistics.
• Compact yard drains with a small cross-section.
• Point drainage in Civil Engineering & Landscaping projects.
• Inner-courtyard drainage in the plastics-processing industry.

Sealing and Installation Within the Winkler System

Even at compact diameters, a reliable mechanical barrier is essential. Our C3 system uses a stable fixing method:

1. Precision-fit manufacturing: The 70 µm high-performance fabric is dimensionally cut to match the C3 drain basket (Ø 395 mm, H 575 mm).
2. Industrial drawstring: Fixing is via a robust drawstring that presses the filter firmly against the bucket body.
3. Important note on retention performance: Since this filter is made without an integrated collar, full bypass-freedom cannot be guaranteed. However, incoming water is largely directed through the fine filter fabric, effectively minimising pellet loss (microplastics).

Comparing the Retention System Models

Use the following overview to find the right system for your existing infrastructure:

Technical Details: Drain Basket C3 Set

Note: as we assemble each bucket system individually for your industrial needs, please allow the corresponding lead time for manufacturing.

Advice From Our Industrial Filtration Specialists

Need help identifying your catch basins? Our specialists for filtration technology consulting or comprehensive industrial filtration consulting are happy to help you secure your compact drainage systems optimally.