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Passive Intake System Design - Johnson Screens Max-Flow™ Passive Intake*

Johnson Screens® next generation Passive Intakes with the Max-Flow™ design increase the flow capacity of the previous designs by up to 40%.
The new patent-pending design offers significant capital savings in any intake project by using more compact or fewer intake screens. Additionally, project savings can be increased by using a smaller Hydroburst™ system and reducing piping and civil works.

Unique Selling Point

•    1.4 times higher capacity than the previous design
•    Newly redesigned internal modifier
•    Efficient water withdrawal by evenly distributing flow and reducing the velocity

      to 0.15 m/s (0.5 feet/second) or less
•    Easy to maintain non-plugging design using Johnson Screens® patented

      Hydroburst™ screen cleaning system
•    316b-compliant intake screens


The new design still promises the same fish-friendly performance as the previous designs of Johnson Screens® Passive Intake screens have been doing for over 40 years.
Johnson Screens® Passive Screens are designed with a maximum slot velocity of typically 0.15 m/s (0.5 feet/second) to minimize impingement. This velocity is the maximum velocity at which a juvenile fish can turn around, swim away and not be impinged onto a passive screen. Sometimes these velocity levels are reduced to meet specific project requirements.
Our Johnson Screens® Max-Flow™ Passive Intakes are optimized for easy handling and optimal water flow from the outside to the inside of the screen. Naturally, the new screen design also offers all of the same features and benefits that standard passive screens do, such as low maintenance, custom applications, lower costs, the Hydroburst™ System for cleaning, and Johnson Screens® Dual Flow modifier as well as Vee-Wire® construction. Our products are protected by active and pending patents.
Let us know your special requirements – we can help you incorporate these and provide you with a customized solution. We look forward to improving your intake system in the near future.
* Patent pending

Locations and Contact


Aqseptence Group Japan Limited, Yokohama

Sales Location
Daiwa Jisho Bldg. 74-1,
Yamashita-Cho Naka-Ku, Yokohama
231-0023 Kanagawa

Tel: +81 45 661 3575

Fax: +81 45 661 1921



Aqseptence Group (India) Private Limited, Ahmedabad

Sales and Manufacturing Location
E-540, GIDC, Sanand-II Industrial Estate,
Village: Bol, Tak: Sanand,
Gujarat 382170, Ahmedabad

Tel: +91 2717 618000



Aqseptence Group Pty Ltd., Brisbane

Sales and Manufacturing Location
88 Brickyard Road,
Geebung 4034 QLD
PO Box 85, Virginia DC,
QLD 4014

Tel: +61 7 3867 5555

Fax: +61 7 3867 5566



Aqseptence Group SAS, Availles-en-Chatellerault

Sales and Manufacturing Location
Zone Industrielle
86530 Availles-en-Châtellerault

Tel: +33 5 4902 1600

Fax: +33 5 4902 1616



Aqseptence Group GmbH, Karlsruhe

Sales and Manufacturing Location
Hardeckstrasse 3
76185 Karlsruhe

Tel: +49 721 5001 0

Fax: +49 721 5001 213


North America

Aqseptence Group, Inc., New Brighton, MN

Sales and Manufacturing Location
1950 Old Hwy 8 NW,
New Brighton, MN 55112

Tel: +1 651 636 3900

Fax: +1 651 638 3171


South America

Aqseptence Group S.A., Santiago

Sales and Manufacturing Location
Av. El Roble 315
9390381 Lampa, Santiago

Tel: +56 02 9280700

Fax: +56 02 9280705


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