Pall FSI™ Standard Felt Filter Bags support the low-cost filtration needs for a variety of applications; including Oil & Gas, Chemical, Industrial Manufacturing, and Food & Beverage.
Our years of experience give us an advantage ensuring the highest quality and performance that you would expect from a trusted brand . Our felt bags are designed to withstand higher solid loading and are suitable for applications using vessel or open filtration systems.
Pall’s FSI Standard Felt Filter Bags include a broad and comprehensive line of sewn or welded seam in polypropylene or polyester media, provide higher solid loading, consistent quality, and performance supporting low cost filtration needs in a variety of Oil & Gas, Chemical, and industrial applications. Standard Felt Filter Bags support the low-cost filtration needs for a variety of applications: Oil & Gas, Chemical, and Industrial Manufacturing.
Welded vs. Sewn Filter Bags
Pall's FSI Polyweld® filter bags hold a distinct advantage over all types of needle-sewn bags. The welded seams completely eliminate the possibility of unfiltered liquid bypass occurring due to needle holes. The result is a tighter seam, high bag efficiency and improved finish product yields. In addition, the fused edges of the Polyweld bag provide a fiber-free finish and virtually eliminate unwanted fiber migration. Since the Polyweld bag is not constructed with thread, the possibility of silicone contamination from this source is also removed. FSI’s Polyweld filter bags are available in several different media: standard polypropylene felt, extended life polypropylene felt, and standard polyester felt.
Features of Polyweld® filter bags
- Welded construction of bags completely eliminates unfiltered liquid bypass from occurring due to needle holes
- Available in standard polypropylene, polyester and extended life felt for broad range of product compatibilityGlazed finish eliminates fiber migration for clearer results
- PolyLoc® ring creates a hermetic seal that prevents liquid bypass and produces clearer results
- Polypropylene is FDA food grade compliant to government standards
- FDA Compliant Polyester felt is available (non-standard)
Sewn (left) vs. Welded (right) seam bags
* SIZES 5, 6, AVAILABLE WITH S RING ONLY
**AVAILABLE IN SIZES 1 AND 2, POLYPROPYLENE AND POLYESTER NON-INSERTED ONLY
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, Deep well injection (water disposal), Salt Water Disposal,
Chemical & Polymer Applications
Chem Final Product (Liquid), Amine/Benfield /Other Solvent loop