Polyweld Filter Bags

Summary

Product identification

FSI (Filter Specialists, Inc.) Polyweld® Filter Bags are designed with welded seams, offering a distinct advantage over needle-sewn bags by eliminating unfiltered liquid bypass through needle holes. This construction results in tighter seams, higher bag efficiencies, and improved product yields. The fused edges provide a fiber-free finish and virtually eliminate fiber migration. Without thread, the possibility of silicone contamination from this source is also removed.

The bags are available in:

• Standard and extended life polypropylene felt
• Standard and extended life polyester felt

Features

• Welded construction completely eliminates unfiltered liquid bypass due to needle holes.
• Available in standard polypropylene, polyester, and extended life felt for a broad range of product compatibility.
• Glazed finish eliminates fiber migration for clearer results.
• PolyLoc® ring creates a hermetic seal to prevent liquid bypass and produce 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.

Operating limits

• 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

Micron Rating

Available micron ratings vary by material type:

• 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

Mechanical / hydraulic

Sizes

• #1: 7” x 16” (17.78 cm x 40.65 cm)
• #2: 7” x 32” (17.8 cm x 81.3 cm)

Filter Bag Data

• Bag Size 1:
  • Surface Area: 2.0 ft²/0.19 m²
  • Volume: 2.1 gal/7.9 liter
  • Diameter: 7.0 inch/17.8 cm
  • Length: 16 inch/40.65 cm
• Bag Size 2:
  • Surface Area: 4.4 ft²/0.41 m²
  • Volume: 4.6 gal/17.3 liter
  • Diameter: 7.0 inch/17.8 cm
  • Length: 32.0 inch/81.3 cm
• Bag Size 3:
  • Surface Area: 0.5 ft²/0.05 m²
  • Volume: 0.37 gal/1.4 liter
  • Diameter: 4.0 inch/10.2 cm
  • Length: 8.25 inch/20.9 cm
• Bag Size 4:
  • Surface Area: 1.0 ft²/0.9 m²
  • Volume: 0.67 gal/2.5 liter
  • Diameter: 4.0 inch/10.2 cm
  • Length: 14.0 inch/35.5 cm
• Bag Size X01:
  • Surface Area: 2.0 ft²/0.19 m²
  • Volume: 2.1 gal/7.9 liter
  • Diameter: 6.0 inch/15.2 cm
  • Length: 22 inch/55.9 cm
• Bag Size XL:
  • Surface Area: 5.3 ft²/0.49 m²
  • Volume: 5.5 gal/0.51 liter
  • Diameter: 9.25 inch/23.5 cm
  • Length: 32 inch/81.3 cm

Flow Rates of Filter Bags

Flow rates are specified for a #2 BAG:

• Felt:
  • 1 & 3 Micron Rating: 80 GPM
  • 5 THRU 200 Micron Rating: 120 GPM
• Mesh:
  • 1, 3, 5 & 100 Micron Rating: 100 GPM
  • 25 THRU 100 Micron Rating: 125 GPM
  • 150 THRU 800 Micron Rating: 150 GPM
• Microfiber:
  • 1A and 2A Micron Rating: 60 GPM
  • 10A, 25A, 90A & 0A Micron Rating: 80 GPM

Filter Fabric Qualities

• Cotton: Specific Gravity 1.55, Tensile Strength 44-109, Abrasion & Flex Fair, Weak Acids Poor, Strong Acids Poor, Weak Alkali Excellent, Strong Alkali Excellent, Solvents Good, Temperature 200-240˚ F.
• Polyester: Specific Gravity 1.38, Tensile Strength 64-124, Abrasion & Flex Very Good, Weak Acids Very Good, Strong Acids Good, Weak Alkali Good, Strong Alkali Poor, Solvents Good, Temperature 275-325˚ F.
• Glass: Specific Gravity 2.56, Tensile Strength 200-215, Abrasion & Flex Poor, Weak Acids Excellent, Strong Acids Good, Weak Alkali Fair, Strong Alkali Poor, Solvents Excellent, Temperature 500-600˚ F.
• Nylon: Specific Gravity 1.14, Tensile Strength 58-128, Abrasion & Flex Excellent, Weak Acids Fair, Strong Acids Poor, Weak Alkali Excellent, Strong Alkali Excellent, Solvents Good, Temperature 275-300˚ F.
• Nomex: Specific Gravity 1.14, Tensile Strength 58-128, Abrasion & Flex Very Good, Weak Acids Fair, Strong Acids Poor, Weak Alkali Excellent, Strong Alkali Excellent, Solvents Good, Temperature 400-450˚ F.
• Polypropylene: Specific Gravity 0.9, Tensile Strength 50-85, Abrasion & Flex Very Good, Weak Acids Excellent, Strong Acids Excellent, Weak Alkali Excellent, Strong Alkali Excellent, Solvents Fair, Temperature 200-220˚ F.

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Disclaimer: This summary is based solely on the provided text extract. It may not include all figures, footnotes, or the most recent revisions of the OEM PDF. For contractual purposes, please refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror