WANSON FILTER

Rainwater Harvesting/Filtration

Professional Underground Rainwater Tank Filter | Self-Cleaning Vortex System | DN110/DN160 EU Standard

High-performance underground tank filter designed for advanced rainwater harvesting. Featuring a stainless steel vortex filtration core with 98% water yield. This EU-standard pre-tank filter handles roof areas up to 500m², ensuring clean water for household and garden reuse. Durable, frost-proof, and easy to maintain.

Advanced Underground Rainwater Tank Filters for Precision Rainwater Harvesting

The Underground Rainwater Tank Filter is the heart of any professional rainwater harvesting system. Unlike standard gutter guards, our underground filtration systems (including Vortex Filters) are designed to handle large roof areas and provide superior water quality before the water enters the storage tank. Engineered for European engineering standards, these units ensure that your underground reservoir remains free of sediment and organic matter.

Core Benefits for the European Market

  • Vortex Centrifugal Technology: Uses the principle of centrifugal force to separate debris from water, achieving a 95% – 98% water recovery rate.
  • Low Maintenance & Self-Cleaning: The vertical stainless steel mesh ensures that dirt is washed away to the drain, minimizing manual cleaning intervals.
  • High Load Capacity: Designed with heavy-duty covers, suitable for installation in garden areas or driveways (Load classes A/B/C available).
  • Frost-Proof Design: Installed underground below the frost line to ensure year-round operation in Central and Northern Europe.

Installation & Maintenance

Our underground filters feature telescopic extension shafts to match the local ground level perfectly. The “Plug & Play” design allows for quick connection to standard DN-sized pipes. For optimal performance, we recommend a brief inspection of the stainless steel filter insert twice a year.

Wholesale & B2B Inquiries

As a specialist manufacturer, we provide OEM solutions and bulk shipping for rainwater tank manufacturers and construction wholesalers across Europe. All products are CE certified and undergo rigorous pressure testing.

Details

Product Category

Professional Pre-tank Rainwater Filtration System

Material

High-Impact UV-Stabilized Polyethylene (HDPE)
Grade 304/316 Stainless Steel (Corrosion Resistant)

Inlet/Outlet Dimensions

Standard DN110 / DN160 / DN200 (EU Pipe Compatible)

Maximum Roof Capacity

Suitable for roof areas up to 500m² per unit

Filtration Precision

0.28mm – 0.55mm ultra-fine mesh for domestic water reuse

Water Collection Efficiency

Over 95% efficiency in typical rainfall conditions

Load Bearing Class

Pedestrian Grade (Class A) / Vehicle Traffic Grade (Optional Class B)

Temperature Resistance

Frost-proof design (-40°C to +80°C) for European climates

Self-Cleaning Mechanism

Vortex centrifugal technology for automatic debris bypass

Installation Depth

Compatible with telescopic extension shafts for variable soil depth

Quality Compliance

Manufactured according to DIN 1989 and EN 12056 standards