BOS Gradient Filter Bags

Pall's FSI BOS Gradient Filter element was the first of its kind, with patented seamless design and true gradient density, this absolute rated element provides users with the depth of a cartridge and the convenience of a bag. This 100% polypropylene microfiber product adsorbs up to 16 times its own weight in hydrocarbons (oils) and will last up to 18 times the life of other products (depending on particle distribution and application).

The unique material composition allows for higher efficiency, with graded pore-size distribution creating absolute filtration. Thermally bonded microfibers create a seamless filter bag that has high tensile strength, providing superior resistance to channeling, unloading, bypass, and other forms of traditional leakage that result from pulsating water. Combined with Polyloc ring, the BOS Gradient filter is a tip-top solution for all demanding applications.

The benefit of using this advanced filter bag is precise particle retention. The BOS gradient filter bag is an ideal product for use in a wide variety of high-purity applications, where absolute filtration is required.

Product images are a representation of product family for illustartion purpose only. Actual products may vary

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 100 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSG100PM2P
Unit of Measure
12/EA
Min Order Qty
12
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 54.46

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 10 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSG10PM2P
Unit of Measure
6/EA
Min Order Qty
6
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 57.44

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 125 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSG125PM2P
Unit of Measure
12/EA
Min Order Qty
12
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 54.46

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 25 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSG25PM2P
Unit of Measure
12/EA
Min Order Qty
12
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 58.18

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 3 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSGC004
Unit of Measure
6/EA
Min Order Qty
6
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 88.08

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 3 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSG3PM2P
Unit of Measure
6/EA
Min Order Qty
6
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 67.77

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 50 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSG50PM2P
Unit of Measure
12/EA
Min Order Qty
12
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 55.71

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 5 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSG5PM2P
Unit of Measure
12/EA
Min Order Qty
12
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 66.27

BOS Gradient Filter Bags, Seamless Microfiber Polypropylene, 75 micron, Size 2, Polyloc Polypropylene, Welded Seam

Product ID: BOSG75PM2P
Unit of Measure
12/EA
Min Order Qty
12
Construction
Welded Seam
Cover
Plain (No Cover)
Cover Micron Rating
NA
FDA Rating
N/A
Handle
Polyloc Handle
Material (Media)
Seamless MicroFiber Polypropylene
See All Attributes
$ 54.46

Description

Features:

 

Gradient Density provides:

  • Up to 18 times extended life compared to other products, dependent upon particle distribution and application
  • Longer life means fewer bag changes which results in lower labor costs and less loss of product
  • Not compressible in operation providing greater dirt holding capacity
  • Designed for typical broad particle distribution applications.
  • Will allow more efficient filtration (lower micron) without sacrificing product life

 

Polypropylene Microfiber material:

  • Adsorbs up to 16 times its own weight in hydrocarbons (oils)
  • Inventory reduction. Eliminates need for stocking “oil” bags
  • Thermally bonded, with no lubricants or surface active agents

 

Polyloc Ring

  • Elimination of by-pass around filter element

 

Fits existing FSI basket

  • No retrofit costs

 

Documents

Filter Bag Documents

  • BOS Gradient Filter Bags

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  • FSI Filter Bag Catalog

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  • FSI Master Catalog

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  • Filter Fabric Qualities and Bag Data

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  • Flow Rates and Micron Rating Availability

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Specifications

Filter Media
BOS
Polypropylene microfiber
Maximum Operating Temperature
Polypropylene
160° F (71° C)
Suggested Differential Pressure
35 PSIG maximum — dirty
10-15 PSIG optimum change out
Micron Rating
Polypropylene Absolute 98% Rated
3, 5, 10, 25, 50, 75, 100, 125
Cover
PM
Polypropylene
Bag Sizes
Size 2
7” x 32” (17.78 cm x 81.28 cm)
Ring (Collar)
P
Polypropylene PolyLoc®
Construction
Seamless Melt-blown Construction

* Available with Sewn seams only

Applications

Industrial Applications

Auto Original Paint, Auto Paint Process Water, Auto Painting/Coating Sludge Separation, Auto Painting/Coating Zinc Phosphate Bath, Auto Power Train Dept: Parts Washing, Test Stands (Metal Chip Filtration), Mining Final Product (Slurry), Municiple Mining Water [Rinsing], Quenching / Cleaning, Roll Bite (Safety Filter), Shape + Material Handling, Pulp & Paper Bleach Chemical Prep, Pulp & Paper LOH, Pulp & Paper Machine Process Application, Pulp & Paper Paper Coating, Pulp & Paper Pulp Screening, Auto Painting/Coating Zinc Phosphate Bath, Midstream Process Water

Oil & Gas Applications

Refinery Amine Systems, Upstream Onshore Produced Water, Upstream Onshore Surface Discharged Water, Midstream Acid Gas, Midstream Glycol Filtration

Chemical & Polymer Applications

Poly Cmdty Raw Material (Fluids), Poly Engrd & Spcl Raw Material (Fluids), Chem Final Product (Liquid), Amine/Benfield /Other Solvent loop