• 604 Avenue Munua, Golf Météo DR CONGO
  • +243 843 040 000
  • sales@ewrefining.com


EWR offers a comprehensive selection of filtration products and services to all industries. EWR has become a Southern African specialist in the manufacturing and the supply of filter press & other liquid fltration services & solutions.


We provide fully automated filter presses with auto plate shifters, stainless steel frames, membrane mixed pack filter plates (complete with gantry), and discharge belts.

EWR Filtration often refurbishes filter presses which includes:

  • Refurbishing the plates
  • Recoating the filter press frames and servicing the hydraulic cylinders
  • Recoating power packs and various other components


EWR strength is solving filtration problems. With the correct application of a  product, one can achieve longer cloth life, lower moisture content, improved clarity, and optimum process efficiency.

Rubber necks
Rubber Evoprene necks are sewn into the feed ports to combat aggressive abrasion and premature wear in the neck area. Various sizes are available for the various thicknesses and port diameters.


Cloth necks
All cloth necks are latex coated to render them impermeable and help core cleaning during cycles. Double neck tapes are supplied and yarns sealed with latex blue sealant to ensure ultra fine particles don’t slip through the cloth necks.


Latex edges
Blue Latex is painted on the edge of some press cloths to help the seal the press and reduce the wicking of liquid from between the filter plates. The Blue latex is resistant to most mineral acids and alkalis.


EWR offers a wide range of filter plates and filter frames to suit all types of filter presses. These filter plates comes with a variety of shapes and applications to ensure the best fit for each industry and filter press system.

Recess Chamber Plates
A wide variety of filter plates are available to suit all types of presses, from 470 mm to 2000 mm.
1. Standard recessed chamber plates and membrane plates.
2. Centre feed , bottom , top or corner feed plates .
3. Open discharge with spigots or closed discharge design.
4. Gasketed or sealed filter cloths
5. Automatic or manual plate shifting.
6. Wash or standard filtration.
Membrane Filter Plates
Crosible Membrane plates are manufactured from HP Polypropylene , in a variety of different sizes.
Special empty chamber squeeze design is available in combination with a cross corner port air blow .This allows for a very dry end product .
Plate and Frame Type
Plate and frames are supplied for various cake thicknesses and different processes.
Various Handles , Spigots & Spouts , cloth dogs and cake scrapers are available.


Some frequent questions about filtration products and process

Yes, blue latex edges seal and help reduce & eliminate wicking of the effluent between the filaments, and thereby substantially reducing press dripping & leaking.

Cake moisture increases when the cloths are blinding. Therefore, selecting a media to reduce blinding reduces cake moisture.
Monofilaments, or Mono/ multifilament cloths prevent blinding hence reducing cake moistures.

A: Polypropylene is the most economical and versatile polymer, tolerating a pH from 0 to 14, and temperatures up to 90 Degree C .
B: Polyester is used for increased tensile strength and higher temperatures & higher oxidation levels.
C: Nylon (Rilsan) is used to combat high temperatures and high abrasion and achieving improved cake discharge .

To reduce cloth edge leaking, but mostly to protect filter cloth from premature failure from the plates during high filtration velocities.
It also helps with creating better drainage on the filter plates.

A: They are abrasion resistant, rendering longer lifespan to filter cloths if cloth necks fail prematurely due to abrasion.
B: Rubber necks render a leak free design, especially when fused and not sewn to the filter cloths, eliminating stitching holes.
C: The core plug of the cake is easily removed during the cleaning cycle, due to the non-drainage aspect.

A: When clarities are compromised due to cloth wear.
B: When cloths are blinded, causing slow filtration rates and moist sloppy cakes.
C: On average between 2-3 months, but if abrasion is severe or plates are compromised this could be reduced to 1-2 months. It is not uncommon to exceed a cloth life of 12 months or more, depending on the use and cycle times of the process.