The 3P Technik Twin Filter is the largest rainwater harvest filter, designed to meet the demands of large roof areas, and the ideal choice for high-efficiency rainwater collection for factory and agricultural building roofs.

The Twin Filter can be installed underground in chambers or directly on walls that are kept frost-free, making it adaptable to different site conditions. It is commonly placed within standard 1000mm manholes, and pre-installation in chambers is also an option.

Self-Cleaning Rainwater Harvesting Filter

This filter employs a two-step self-cleaning system that maintains high filtering efficiency regardless of flow rate. 

The steep inclination of the filter cartridge ensures that dirt and debris are continuously cleaned away into the waste outlet, leaving your collected rainwater in a clean condition.

The 3P two-step filtration system has a proven track record for reliability and efficiency, making it the trusted choice for rainwater harvesting.

It has a connection capacity for roof areas of up to 800m², so it can efficiently handle rainwater from large surfaces. Additionally, a bypass-installation option allows for connection to even larger areas.

The Twin Filter features two rainwater inlets, sized at DN 100 and DN 150 (110mm/160mm OD), providing flexibility for different installations.

Similarly, it includes two tank inlets at DN 100 and DN 150 (110mm/160mm OD) to accommodate various storage setups.

Two outlets, sized at DN 100 and DN 150 (110mm/160mm OD), ensure efficient disposal of filtered dirt and wastewater into the sewer system.

The filter typically requires cleaning only 1 to 2 times a year, keeping maintenance efforts to a minimum.

How The Self-cleaning Rainwater Filter Works

1. Incoming rainwater collects in the inlet weir sump, from which it must weir over onto the 2 filter units (overflow principle)

2. Cleaning takes place over the two cascades.  Dirt and debris particles are washed directly away via the primary cascade.

3. Pre-filtered water then flows over the secondary filter sieve mesh size 0.65mm. Due to the special mesh structure of the sieve, any dirt washes directly into the sewer.

4. The filtered water collects in the central sump and passes to collection tanks via both clean water outlets.

5. The dirt that has been filtered out is washed to waste via the two outlets.

6. The outlet to waste must be at least as big as the inlet.

Upgrade your rainwater harvesting filter system today. Order the 3P Technik Twin Filter and experience superior water quality.