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Duda Diesel Polyester Felt (PESP4S) Filter Bag, Size#4, 4' x 14', 10 Micron, 25 Pack

4.6 (8) Write Review
Free shipping on orders over $29.99

$117.44

$ 55 .99 $55.99

In Stock

1.Size:10 Micron


2.:10


  • General Introduction to Liquid Filtration: All filtration and screening involves limiting the passage of various sized solids by means of a barrier or fabric or media. This is done in two ways, by depth filtration using graded density material called felt or by surface filtration using filament woven material called mesh. Woven bags in turn have two basic varieties: multi-filament and monofilament. A general description of separation methods of media is helpful.
  • FELT: This is a filtration media made from a matrix of small fibers. One side is heat bonded to provide a uniform surface free of fiber loss. Contaminant particles are contained within the media by impingement and entrapment. "Porosity" is defined by nominal micron ratings (1, 5,10,25,50,100,200) indicating the largest particle that can pass through, in general, and reflecting an increase in the density.
  • PTFE MEMBRANE SURFACE FELT: This is a filter media having a "Teflon" micro-porous membrane applied to a base of polyester felt. This results in a nonstick surface which allows for a contaminant "cake" to build and slough off or be removed by cleaning.
  • PEMU - MULTIFILAMENT MESH FABRIC (POLYESTER): This is a two-dimensional square-woven fabric used for light filtration and general purpose screening. Consistently woven using a given number of threads per inch, its filaments are comprised of small fibers, twisted into threads. It is generally made of polyester polymer. "Porosity" is defined in broad divisions of hole size, measured in microns (i.e. 100, 150, 250, 400, 600, 800)
  • A two-dimensional square of woven mesh fabric used for lower solids or higher accuracy screening and classification of solids. Made from a smooth uniform, one piece extruded thread woven into a screen with high accuracy and consistency. Used for exact separation. "Porosity" is defined by a hole size in microns, with greater variety than multi-filaments (i.e. 25, 50, 75, 100, 120, 150, 175, 200, 250, 300, 400, 500, 600, 800).


All filtration and screening involves limiting the passage of various sized solids by means of a barrier or fabric or media. This is done in two ways, by depth filtration using graded density material called felt or by surface filtration using filament woven material called mesh. Woven bags in turn have two basic varieties: multi-filament and monofilament. In any application, variables such as flow volume, solids loading, shape and density of contaminants and other factors make this an inexact science. A general description of separation methods of media is helpful.


J Rickman
June 14, 2025
I used these for a few days after I moved my reef tank over to a larger size. These work very well at taking out the small particles, thus cleaning up the water pretty quickly. I just swapped them out every few hours (as needed) for the first day, then once a day for a few days. Eventually I went to the 200 micron socks that I normally use.
spiderkills
May 22, 2025
I put this on my intake of my above ground pool. You would not believe how much tiny particles it takes out of the water.While vacuuming my pool some amounts of dirt would come back into the pool. This bag took care of that problem.
Kindle Customer
May 15, 2025
It arrived on time nice package. Worked ok. Read other reviews on seam issues Held it sideways just to test. My application needs smaller sized microns but for pregilter this one works
Mopelola'Kemi Ogundare
April 21, 2025
Replacement of broken mirror
adkcub
April 12, 2025
Very great product. These were much better quality than I expected and do a great job. I highly recommend These to anyone who needs to fine filter any liquid.
Customer
February 15, 2025
Great product.
Zoe
February 9, 2025
Exactly what I needed!
arutledge
January 27, 2025
great for swimming pools