Pall FSI Felt Filter Bags
PolyWeld Filter Bags
FSI’s 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, higher bag efficiencies and improved finish product yields. In addition, the fused edges of our PolyWeld filter bags 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 standard and extended life polypropylene felt, and standard and extended life polyester felt.
- 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 compatibility.
- Glazed 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).
- Silicone free to eliminate cratering for improved surface results.
- Available from stock for quick delivery.
Specifications for PolyWeld Filter Bags
- Polypropylene, Polyester Standard and FDA Compliant Polyester
- Polypropylene and Polyester Extended Life
Maximum Operating Temperature
- Polypropylene: 200-220° F (93-104° C)
- Polyester: 275-325° F (135-162° C)
Suggested Differential Pressure
- 35 PSIG maximum — dirty
- 10-15 PSIG optimum change out
- BPONG = 1, 3, 5, 10, 25, 50, 100
- BPENG = 1, 3, 5, 10, 25, 75, 100, 200
- BPOEX = 5, 10, 25, 50 100
- BPEEX = 1, 5, 10, 25, 50, 100
- #1: 7” x 16” (17.78 cm x 40.65 cm)
- #2: 7” x 32” (17.8 cm x 81.3 cm)
- Plastic PolyLoc® Rings
- Welded Seam Construction
PENG = Polyester
PEEX = Polyester
PE = Polyester PolyLoc®
F = FDA Compliant Polyester