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GRAF
Otto Graf GmbH
Carl-Zeiss-Straße 2-6
DE-79331 Teningen
export@graf.info
www.graf.info
Tel. +49 7641 589-0
Fax +49 7641 589-50
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GRAF Filter advisor

Find your filter solution

connection size

installation location

 

 

In the tank: The filter is installed in the tank dome of the underground tank. Due to the internal installation, no additional excavation is required for the filter and no cover is visible in the garden. The easy access to the tank is ensured thanks to the filter which is easy removable.

 

Outside the tank: The filter is mounted in a shaft housing which is installed in the ground in front of the cistern. External filters are suitable for retrofitting or for drainage of larger roof areas amongst others.

 

 

 

Tip: When installing a tank with a driveable cast iron cover, the use of an external filter with plastic cover may facilitate the maintenance. The filter needs to be installed outside of trafficable areas for this purpose.

 

 

 

 

 

Load capacity

suitable for infiltration

The water which is passed into infiltration plants should be filtered first. GRAF recommends the use of basket filters for downstream infiltration systems. Low-maintenance filters always require a wastewater outfall. 

 

low maintenance

Low-maintenance filters are filters with a self-cleaning filter surface and optionally a filter cleaning unit. Pollution from the filter surface will be flushed with the next heavy rainfall in the overflow siphon of the rainwater tank. These filters provide a long-lasting excellent water quality and are especially recommended for the use of rainwater in the house (e.g. washing machine / toilet).


Low-maintenance filters are not suitable for a combination with downstream infiltration systems.

 

  1. graf.info/en
  2. Stormwater Management
  3. Infiltration filters
  4. Product advisor filter
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  • All about stormwater management
  • Stormwater Management
  • Infiltration tanks
  • Infiltration filters
    • Product advisor filter
    • Universal-Filter 3 external
    • Drainstar filter external
    • Drainstar filter XL external
    • Universal-Industrial Filter 3 external
    • Infiltration filter shaft
    • Sedimentation filter shaft, suitable for pedestrian loading/vehicle loadingt
  • Infiltration shaft system
  • References
Catalogue Stormwater Management

PDF | 15 MB | 35 pages

Salesfolder EcoBloc System

PDF | 3 MB | 9 pages

Sizing form for infiltration systems

PDF | 684 KB | 2 pages

Please download the PDF file. Fill in. Send it back.

It's that easy:

  1. Download the PDF file on your computer and open it e.g. with the free Adobe Acrobat Reader. Fill in the form and send it back to us.
    • by e-mail to mail@graf.info or
    • by FAX to +49 7641 589-50
  2. You will promptly receive a dimensioning or an initial offer
  3. If you have any questions or need support, please contact us.

We look forward to your enquiry!

Open PDF

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Otto Graf GmbH
Carl-Zeiss-Straße 2-6
DE-79331 Teningen
Tel.: +49 7641 589-0
Fax: +49 7641 589-50
E-Mail: export@graf.info
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