Filters > Polyester Felt (PE) Filter Bag [PESP3S]
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PE PES size#3 Polyester Filter Bag 4" x 8" PE PES size#3 Polyester Filter Bag 4" x 8"
PE PES size#3 Polyester Filter Bag 4" x 8" PE PES size#3 Polyester Filter Bag 4" x 8"

Item Description

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. Wovens, in turn have two basic varieties: multifilament 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.

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. This fabric does not produce an absolute filtration but rather a range based on generally accepted industry tests. Many factors influence the actual filtration including the shape, size, consistency and loading of the contaminates. Also, the feed pressure and rate of flow affects the filtration results. These felts have a far higher dirt capacity and flow rate than a flat woven type bag and is much more resistant to blinding (clogging). The material is meant to be disposable and does not clean as well as a woven material.

FELT
ADVANTAGES
DISADVANTAGES
High Flow Rate
Cannot be cleaned
Low Cost
Inexact filtration
Easy disposal of solids in bag
Variable performance
High solids capacity

PTFE MEMBRANE SURFACE FELT

This is a filter media having a "Teflon" microporous 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.

PTFE Coated Felt
ADVANTAGES
DISADVANTAGES
Consistent filtration
High cost
Extended life
Lower flow rate
Sub-micron potential
Low solids capacity

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). This mesh does not produce an absolute filtration but rather a range based on generally accepted industry tests. Many factors influence the actual filtration including the shape, size, consistency and loading of the contaminates. Also, the feed pressure and rate of flow affects the filtration results. These woven materials are easier to clean than felt materials.

PEMU (Polyester)
ADVANTAGES
DISADVANTAGES
Low Cost
Moderate accuracy
Disposable
low solids capacity
Can be used to prescreen
not as strong as NMO
Moderately Cleanable
blinding of hole

NMO - MONOFILAMENT MESH (NYLON)

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 multifilaments (i.e. 25, 50, 75, 100, 120, 150, 175, 200, 250, 300, 400, 500, 600, 800).

 

NMO (Nylon)
ADVANTAGES
DISADVANTAGES
Strong
Blinding
Very cleanable
High Cost
Accurate
Low solid capacity

 

POLYMER DATA
NYLON
POLYESTER
POLYPROPYLENE
Max Temp
325°F
300°F
225°F
Chem Resistance
poor
good
best

 


Compare Filter Bags
Filter Media
Micron Range
Advantages
Disadvantages
Polyester Felt
1-100
Inexpensive, general chemical resistance
Over-cleaning degrades filtering capabilities
Polyester Mesh
100-600
Flexible, Light Weight
Low Strength
Nylon
10-1000
Light Weight, Flexible
Expensive
Polypropylene
1-100
Filters Fats & Viscous Fluids, Chemical Resistance (See Chart Below)
Over-cleaning degrades filtering capabilities

Chemical Resistive + Temp Ratings
Media
Mineral Acids
Organic Acids
Alkalis
Oxidizing Acids
Animal Vegetable Petro-Oils
Organic Solvents
Micro Organisms
Temp Limits (F)

Polyester

Good
Good
Good
Good
Excellent
Excellent
Excellent
275

Polypropylene

Good
Excellent
Good
Fair
Excellent
Good
Excellent
200

Nylon

Poor
Fair
Good
Poor
Excellent
Excellent
Excellent
300


 

PE PES size#3 Polyester Filter Bag 4" x 8"
Polyester Felt (PE) Filter Bag
• Size#3, with hanging strap
• 8" Length, 4" Diameter
• Singed for prevention of fiber breaking
QTY
$Ea.
1+
2.95
2+
2.80
5+
2.50
25+
2.10
100+
1.95
In stock
QTY
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