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Johnson Screens Centerpipes and Outer Baskets

Johnson Screens' Centerpipes and Outer Baskets increase flow rates and decrease vessel size.


Because of their high-volume flow and minimal pressure drop, radial flow systems are often used in catalytic refining processes. In its simplest form, a radial flow system consists of two concentric screens with an annulus filled with treatment media.

The system efficiency is a direct result of the effectiveness of the screen internals. Made of welded wires and rods, Johnson Screens' centerpipes offer exceptional strength and resistance to collapse, buckling or breaking. 

Equally important, their plug-resistant slot design and high open-area percentage provides dependable media retention, high-volume flow and long service life. As a further refinement, slots on both the center screen and outer basket are oriented vertically to allow media to slide up and down during processing without becoming abraded by the screen slot edges.

  • Screens are most often made of stainless steel type 304, 316, 321 or 347. Other metals may also be used.
  • Screen baskets and centerpipes are available in any height and diameter.
  • Slots are as small as 0.25 mm / 0.01 in. and any size larger in increments of 0.025 mm / 0.001 in.
  • Cover plates, manways and other options may be provided as needed.
  • Screens can be made in sections, so that they can fit through manways.

Locations and Contact


Aqseptence Group Japan Limited, Susono

Manufacturing Location
A138 Kanezawa, Susono
410-1106 Shizuoka

Tel: +81 55 997 8511

Fax: +81 55 997 8514



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 SAS, Soissons

Sales and Manufacturing Location
108 route de Reims
02200 Billy-sur-Aisne

Tel: +33 3 23 75 05 42

Fax: +33 3 23 75 05 43


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


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