A
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| Absolute filter fineness |
An filtermedium with an absolute filter fineness removes more than 99,98% of the particles intended to be seperated. (s. nominal filter fineness) |
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B
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| Bypass |
Bypass filtration means the loss of the filter surface by needle puncture marks, which may occur in the cut point range of 1-150 microns nominal. Through the use of specific bands (with monofilament mesh fabrics) or fully welded materials (multifilament needlefelts), this problem is almost solved. Bypass could also due to defective seals or damage the filter media (cracks) occur |
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C
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| Closed filtration |
Filtration in a closed system (pipeline- or hosesystem), where liquids can be pumped with pressure, so the filter must be able to stand higher grades of pressure. |
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D
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DOE filter cartridges
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DOE = double open end |
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E
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| EPDM |
Ethylen-Propylen-Dien-Kautschuk |
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F
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| FDA |
FDA (Food and Drug Administration) is an agency of the United States Department of Health and Human Services and is responsible for e.g. food, drugs, medical products or cosmetics. |
| Filter cake |
A filter cake is built up by particles held back on the surface of a filter medium.(s. particles) |
| Filtrate |
Filtrat is filterted suspension.(see suspension) |
| FPM |
Fluor Polymer Kautschuk (Viton) |
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G
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H
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I
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J
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K
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L
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M
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| Monofilament |
A monofilament thread consists of only one single fibre. The opposite of a monofilament is a multifilament. (s. Multifilament) |
| Multifilament |
A multifilament thread consists of at least two fibres. The opposite of a mulitfilament is a monofilament. (s. Monofilament) |
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N
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Nominal filter fineness
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The nominal filter fineness describes the size of those particles, which should be separated by a filtermedium. "Nominal" means, that only a certain rate of these particles is separated, e.g. 70 %. A filtermedium with an absolut filter fineness would hold back more than 99,98% of the particles intended to be separated. |
| NBR |
Nitrile Butadiene Rubber (Buna) |
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O
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Open filtration
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Filtration using gravitiy, not the pressure of any pumps. |
| Open filter area |
The open filter area is the part ( in %) of all mesh openings with regard to the whole filter area. |
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P
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| Particles |
Unresolved solids which can take any kind of shape. |
PTFE
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Polyetrafourethen (Teflon) |
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Q
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R
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| Removal efficiency |
denies, to which grade (in %) a filtermedium is able to separate a certain particle size considering the filter fineness of the filtermedium. |
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S
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| SOE filter cartridges |
SOE = single open end |
| Suspension |
Fluid containing finely spaced-out solids. It´s the liquid to be filtered. |
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T
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U
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V
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W
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X
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Y
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Z
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