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Rainwater filter for bigger roof areas.Filter installation in a concrete ring (Ų 1200mm). Normally standard concrete shafts are used. The filter can be delivered to the site yet pre-assembled in the shaft.
Two step cleaning system, therefore high level of filtering efficiency, independent of flow rate.
Due to the steep inclination of the filter cartridge the dirt is continuously cleaned away into the sewer. The connection to the sewer is installed at the shaft. The dirt falls down on the bottom of the shaft and is washed away with the next strong rainfall.
Relative connection capacity according to DIN 1986 for roof areas up to 3000m2. Because of a Bypass-Installation a bigger area can be connected.
Maximum Flow Rate Sieve insert 9L/sec = 32.4m3 cleaned water per hour.
Inlet rainwater 2 x DN 250 Outlet into storage DN 200 Outlet into sewer DN 250 Height difference between inlet and outlet 320mm.
The filter has to be cleaned 1 or 2 times during the year depending on the contamination.
How it works: 1. As water arrives the level builds up and overtops the filter lip, so ensuring it is distributed evenly across the whole width of the filter cascade.
2. Pre cleaning through the cascades. Largest dirt particles are lead across the primary filter cascades directly to the sewer.
3. Pre filtered water then flows over the secondary filter sieve (mesh size 0.4 x 1mm). Due to the special mesh structure of the sieve, any dirt falls directly down onto the bottom of the shaft. In case of heavy rainfalls, the filter has more loss, as the water washes away the filtered dirt into the sewer.
4. The cleaned water is being absorbed in the lower tank and directed through a tube DN 150 into the storage.
5. Dirt goes to the sewer through the shaft.
Technical Data: Filter according to DIN 1989-2, Type C
Material Filter corpus: stainless steel 4016 Material Filter sieve: stainless steel 1.4301 Mesh size: 0.4 x 1mm
Legs = Thread rods M10 with screw nut made of stainless steel. Length: 250mm Weight: 39.5kg
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