Liquid Filter Bags
Liquid Filter Bags
At Custom Filtration Solutions (CFS), we stock three core liquid bag families that cover most plant needs: Standard Felt, Mesh, and High-Efficiency Microfiber. Use the guide below to choose the right path and then explore the detailed subpages.
Which Bag Should I Choose?
Quick selector:
- Depth filtration for gels/fines and longer life → Standard Felt
- Surface filtration with uniform openings and easy rinsing → Mesh
- Higher capture efficiency (graded density, ≥95%) for fine particulate → High-Efficiency Microfiber
Side-by-Side Comparison
| Bag Type | How It Filters | Typical Micron Range | Best For | Notes |
|---|---|---|---|---|
| Standard Felt | Depth media (polypropylene / polyester / aramid / PTFE) | 1–200 µm | General liquids, gels & fines, higher dirt load, longer life | Sewn or welded; finishes: plain / singed / glazed |
| Mesh | Surface media (mono- or multi-filament) | 1–1500 µm (style dependent) | Coarse–medium solids, precise cut-points, rinse/reuse | Monofilament = precise; Multifilament = robust |
| High-Efficiency Microfiber | Multilayer microfiber with graded density | 0.5–90 µm | Fine particulate with ≥95% capture efficiency | Polypropylene or polyester microfiber |
Types of Liquid Filter Bags
Standard Felt Filter Bags
Depth-loading media for broad, economical filtration. Excellent dirt-holding capacity and the ability to capture both solid and gelatinous particles. Available in sewn or fully welded construction; handles on ring-style bags.
- Media: Polypropylene (plain/glazed), Polyester (plain/singed), Nomex (aramid), PTFE
- Micron ratings: 1–200 µm
- Typical temps: up to ~180°F (polypropylene), ~275°F (polyester/aramid)
Mesh Filter Bags
Surface-filtration media with uniform openings for clear cut-points and easy inspection. Monofilament styles provide precise particle retention; multifilament styles are durable and economical for general use.
- Media/Styles: Nylon or polypropylene monofilament; Nylon or polyester multifilament
- Micron range: 1–1500 µm (by style)
- Use cases: Coarse to medium solids, rinse/reuse, visual inspection
High-Efficiency Microfiber Bags (POMF / PEMF)
Multilayer microfiber with graded density for polish-level capture at low differential pressure. Ideal when you’re chasing higher removal efficiency without jumping to cartridges.
- Materials: Polypropylene (POMF) or Polyester (PEMF)
- Micron ratings: 0.5, 1, 2, 5, 10, 25, 50, 90 µm
- Performance: ≥95% capture efficiency across rated microns
Standard Bag Dimensions
These size codes fit the vast majority of industry-standard housings.
| Size Code | Diameter (in) | Length (in) |
|---|---|---|
| P1 | 7.06 | 16.5 |
| P2 | 7.06 | 32.0 |
| P3 | 4.12 | 8.0 |
| P4 | 4.12 | 14.0 |
| P5 | 4.12 | 24.0 |
| P7 | 5.50 | 15.0 |
| P8 | 5.50 | 21.0 |
| P9 | 5.50 | 31.0 |
| P11 | 8.50 | 16.0 |
| P12 | 8.50 | 32.0 |
| RP1 | 8.0 | 30.0 |
| RP2 | 8.0 | 40.0 |
| PC1 | 9.0 | 20.0 |
| PC2 | 9.0 | 30.0 |
| X01 | 6.0 | 22.0 |
Ring & Flange Options
Choose the connection that matches your housing and operating environment.
- Galvanized Steel (S)
- Stainless Steel (SS)
- Polypropylene Ring (PP)
- Titanium (T)
- Santoprene Rubber Flange (E)
- CFS-P Flange (P)
- CFS-F Flange (F)
- CFS OSS Flange (OSS)
- No Ring (NR)
- Draw String (DS)
