Precision Micronic Filter Cloth
  800.440.6374     Phone 360.835.7507    sales@wovenwire.com




     

Stainless steel filter cloth specifications are precise geometrical structures with uniform porosity, in contrast to fibrous felts or synthetic fibers.

Filter cloth is used for separation of solids and clear liquid filtration as in the cleaning of fuels or hydraulic liquids, or in water treatment.

Stainless Steel Filter Cloth is produced in the following weave styles:

 

Twill Dutch Weaves The finest particle size retention possible in wire cloth is achieved by utilizing Twill Dutch Weaves. The term "Twill" indicates the warp and shute (weft) wires pass alternately over two and under two wires. The term "Dutch" refers to the use of a heavier warp wire diameter in conjunction with a lighter shute wire diameter.

 

Stainless Steel Filter Cloth, Twill Dutch Weave       In a Twill Dutch Double Weave the shute wires are driven up so tightly that there is always a shute wire above and below the warp wires, creating a weave with the warp wires completely covered. The flow-pass geometry is extremely tortuous, insuring excellent particle size retention.
Twill Dutch Weave Specifications

TDW Flow Rate Data

 

Plain Dutch Weaves Plain Dutch (Hollander) Weaves can accommodate high flow rates with a relatively low pressure drop.

  Plain Dutch Filter Cloth   The wires are woven with each warp and weft (shute) wire passing over and under one wire. The weft wires are smaller in diameter than the warp wires and are driven up close together, creating a dense weave.
Plain Dutch Weave Specifications

PDW Flow Rate Data

 
Reverse Dutch Weaves are woven in a reverse of the Plain Dutch Weave wire arrangement, whereby finer warp wires are positioned tightly together and a thicker weft wire is woven in at set intervals..
       http://www.wovenwire.com/images/reversedutch.gif   The cloth is mechanically strong with a high throughput and it performs particularly well in high pressure vertical and horizontal applications where backwashing and filter cake removal are important.
Reverse Dutch Weave Specifications
This Section Is Under Construction 
 

ABSOLUTE MICRON RETENTION

In both types of Dutch Weave the sum derived from multiplying the number of weft wires in a given measurement by their diameter results in theory, on a specification with no open space.  Because the wires are driven together during the weaving process, the aperture size cannot be calculated in the normal manner.

 

There are two methods by which the aperture (pore) size can be determined:

 

  BUBBLE POINT TEST

The pressure required to pass air bubbles through the mesh (covered by a test liquid) is measured.  The average aperture size is then calculated by taking into account surface tension, liquid density, temperature and immersion depth.
 
  GLASS BEAD TEST
A suspension containing glass beads is passed through the mesh - the diameter of the largest bead passing through is considered as the absolute micron retention.
 
 
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33008 NE Washougal River Road, Washougal WA 98671 USA
 
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Last modified: June 06, 2017