Rubber Diaphragms

  • Cost-effective​
  • Longer lifetime
  • Most optimal natural rubber (NR) compound

Extend Diaphragm’s Lifetime

Roxia rubber diaphragms for tower press filters combine professional moulding manufacturing and benefits of more than 40 years of experience in elastomer technology and high stressed rubbers. Each Roxia diaphragm is fully moulded, made with one pressing, resulting in smooth transitions and high quality. We focus on product advancement to extend lifetime and filter availability.

Improved functionality and extended lifetime

Roxia diaphragms for tower press filters have improved moulding. We use only one homogenous mould to get the best results and professional finishing. This and other improvements are based on valuable practical experience from the field and professional elastomer knowledge. The natural rubber (NR) compound is the most optimal for heavy duty filtration processes to endure immense pressures and have a longer lifetime.

To make overall better diaphragms and extend lifetime, several other improvements have been made. Diaphragm areas against pressing air/water outlet and feed inlet are now reinforced and therefore more durable. Grooves and pipes secure free air/water outlet, improving diaphragm’s functionality. All improvements contribute to better filter availability.

 


Diaphragm areas against pressing air/water outlet and feed inlet are now reinforced and therefore more durable.

Roxia diaphragm 6 m² tower press filter plate size. Other sizes are available as well.

Available sizes and materials of Roxia rubber diaphragms

Choose from diaphragms for 1,6 m² (flat and cupped), 2,5 m² and 6 m² tower press filter plate sizes. Four different rubber compounds are available: IIR, NR, NBR and EPDM. See datasheet for more information.

Click here to see the mechanical properties of NR and NBR. Contact us to check mechanical properties of IIR and EPDM.


Roxia diaphragm 6 m² tower press filter plate size.
Other sizes are available as well.

Diaphragms for PP filter plates

Roxia also offers pressing diaphragms suitable for filter plates made of polypropylene (PP). PP filter plates are mainly used in chemical industry, hydro-metallurgy and starch filtration. The reason to use PP plates instead of steel in those applications is mainly in better chemical resistance.

The diaphragm’s material is still rubber but there are a couple of structural differences when compared to steel plates:

  • When we are dealing with PP filter plates, the diaphragm’s edge also functions as the filter plate seal.
  • Diaphragms are fitted differently to the polypropylene filter plates. They are fixed into the groove at the bottom of the plate. Because of that another, separate part called feed shoe is needed to lead the slurry into the filtration chamber.

Feed Shoe

Feed shoe is a separate, integral part for the PP filter plates. Because the pressing diaphragm is fixed directly to the filter plate, slurry could not enter inside the chamber without the feed shoe.

Feed shoe therefore lifts the diaphragm in a specific spot and feeds the slurry inside the filtration chamber. The feed shoe has an additional Feed Shoe Seal on the bottom to seal the filtration chamber in that specific area.


Roxia diaphragms for tower press filters have improved moulding.

Available as standalone spare part

Diaphragms for PP filter plates, feed shoes and feed shoe seals are directly connected to each other. They often do not have the same lifetime but usually feed shoe is sold together with seal in a package. This is the reason why Roxia can deliver the feed shoe seal or the diaphragm as a separate spare part. Contact us to get more information about the filter spares.

Roxia Pressing Diaphragms for Tower Press Filters

PRESSING DIAPHRAGMS FOR 1,6 M2 PLATE, CUP

Roxia item Description ~Weight, kg OEM item
*FI10894-NR1 Pressing Diaphragm, 1,6m2, Cup, NR 14 P24412/NR
*FI10894-IIR1 Pressing Diaphragm, 1,6m2, Cup, IIR (Butyl) 14 P210148/IIR
*FI10894-NBR1 Pressing Diaphragm, 1,6m2, Cup, NBR 16 P28510/NBR
*FI10894-IR1 Pressing Diaphragm, 1,6m2, Cup, IR 14
FI10000-NR1 Pressing Diaphragm, 1,6m2, Cup, NR 14 P24412/NR
FI10000-IIR1

 

Pressing Diaphragm, 1,6m2, Cup, IIR (Butyl) 14 P210148/IIR
FI10000-EPDM1

 

Pressing Diaphragm, 1,6m2, Cup, EPDM 14 P24412/EPDM
FI10000-NBR1

 

Pressing Diaphragm, 1,6m2, Cup, NBR 16 P28510/NBR

 

PRESSING DIAPHRAGMS FOR 1,6 M2 PLATE, FLAT

Roxia item Description ~Weight, kg OEM item
*FI10165-NR1 Pressing Diaphragm, 1,6m2, Flat, NR 14 P314396/NR
*FI10165-IIR1 Pressing Diaphragm, 1,6m2, Flat, IIR (Butyl) 14 P314396/IIR
*FI10165-NBR1 Pressing Diaphragm, 1,6m2, Flat, NBR 16 P314396/NBR
*FI10165-IR1 Pressing Diaphragm, 1,6m2, Flat, IR (Isopren) 14 P314396/IR
FI10004-NR1 Pressing Diaphragm, 1,6m2, Flat, NR 14 P314396/NR
FI10004-IIR1

 

Pressing Diaphragm, 1,6m2, Flat, IIR (Butyl) 14 P314396/IIR
FI10004-EPDM1

 

Pressing Diaphragm, 1,6m2, Flat, EPDM 14 P314396/EPDM
FI10004-NBR1

 

Pressing Diaphragm, 1,6m2, Flat, NBR 16 P314396/NBR

 

PRESSING DIAPHRAGMS FOR 1,6 M2 PP-PLATE

Roxia item Description ~Weight, kg OEM item
*105475-NR1 Pressing Diaphragms for 1,6m2, PP-plate, NR 16 H1895184/NR
*105475-NR1 Pressing Diaphragms for 1,6m2, PP-plate, IIR 16 H1895184/IIR
*105475-NBR1 Pressing Diaphragms for 1,6m2, PP-plate, NBR 18 H1895184/NBR
*105475-IR1 Pressing Diaphragms for 1,6m2, PP-plate, IR 16 H1895184
*105475-IR1 Pressing Diaphragms for 1,6m2, PP-plate, NR 16 H1895184/NR
106172-EPDM1

 

Pressing Diaphragms for 1,6m2, PP-plate, EPDM 16 H1895184/EPDM

 

PRESSING DIAPHRAGMS FOR 2,5 M2 PLATE

Roxia item Description ~Weight, kg OEM item
*FI10340-NR1 Pressing Diaphragm, 2,5m2, NR 25 F500005/NR1
*FI10340-IIR1 Pressing Diaphragm, 2,5m2, IIR 25 F500005/IIR1
*FI10340-EPDM1 Pressing Diaphragm, 2,5m2, EPDM 25 F500005/EPDM

 

PRESSING DIAPHRAGMS FOR 6,0 M2 PLATE

Roxia item Description ~Weight, kg OEM item
*FI10696-NR1 Pressing Diaphragm, 6,0m2, NR 45 P211838/NR
*FI10696-IIR1 Pressing Diaphragm, 6,0m2, IIR 45 P211838/IIR
*FI10696-NBR1 Pressing Diaphragm, 6,0m2, NBR 50 P211838/NBR
*FI10696-IIR1 Pressing Diaphragm, 6,0m2, IR 45 P211838/IR
FI10008-NR1 Pressing Diaphragm, 6,0m2, NR 45 P211838/NR
FI10008-IIR1

 

Pressing Diaphragm, 6,0m2, NR 45 P211838/NR
FI10008-EPDM1

 

Pressing Diaphragm, 6,0m2, EPDM 45 P211838/EPDM1

 
*Recommended option
For mechanical properties of rubbers, please contact us.

Information without engagement. All rights to changes without prior notice reserved.

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Danie Groenewald

Area Sales Manager South Africa

+27 10 590 8374

Kauko Tanninen

President, Russia & CIS

+7985 226 14 91

Russell Beaumont

Senior Service Manager, Filters Australia

+61 408159305

Ettienne Joubert

Sales Engineer South Africa

+27 (0) 81 030 1015

Sun Lin

Area Sales Manager, General Manager China

+86 21 52679628

Lyle Henson

Environmental Technologies Sales Manager North America

+1 443 695 9510

Dan Stenglein

Sales Director North America

+1 667 500-2591

Ronald Gaspar

Technical Service Manager Peru, Colombia

+51 9 7973 5424

Robert Parks

Filter Sales Manager North America

+1 410 636 2250

Maureen Briceño

Sales Manager Chile, Brazil

+56 2 3224 9704

Yury Beloborodko

Director, Filtration MMM & CEEC Russia & CIS

+7 921 959 46 20

Sergey Petukhov

Technical Director Russia & CIS

+7 495 726 57 41

Don Kitchen

Filter Spares Sales & Service Manager North America

+1-410-636 2250

Jesse Saira

Area Sales Manager Nordic and Baltic Countries

+358 44 276 2338

Dirk Otto

Sales Director Central Europe

+49 (0) 2102 420 707

Victor Ortega

Area Sales Manager Asia Pacific

+61 499 156 590

Juho Uusitalo

Area Sales Manager Eastern Europe

+358 40 680 4396

Kimmo Angeria

Head of Field Services, Roxia Automation

+358 400 104 977

Eduardo Paredes

Sales Director South America

+56 994 991 561

Markus Saloniemi

CEO, Roxia Automation

+358 40 571 9520

Fernando Henriquez

Sales Director Peru

+51956360887