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) |
| 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 |








