# TW Series Bags (TW)

> Fil-Trek Bag Filters. Canonical page: https://www.fil-trek.com/products/bag-filters/tw

Category: Bag Filters
Series: TW
Model format: `TW-[MEDIA]-[MICRON]-[FLANGE]`
Example: `TW-PO-5-PS`

## Overview
Extended-length felt bags for Fil‑Trek TW vessels feature glazed/singed finishes for low fiber migration and a welded Plastic Sure Seal flange for a positive fit in TW baskets, delivering stable depth filtration with low bypass, low dP, and fewer changeouts

## How It Works
Fluid flows inside-to-outside through a basket-supported bag. Multi-layer depth media provides graded capture and aids trace-oil reduction.

## Applications
- Prefiltration/guard filtration: RO/UF pretreatment, general process water, wastewater polishing
- Chemicals, resins, adhesives; coatings, paints, inks
- Coolants, parts-wash fluids, light oils and utility liquids across industrial sectors
- Data centers: FWS cooling tower, chilled water filtration

## Physical Specifications
- **flow direction:** Inside-to-outside

## Media Specifications
- **media primary options:** Polypropylene, Polyester
- **micron ratings:** 0.5, 1, 3, 5, 10, 25, 50, 75, 100, 200
- **efficiency percent:** 90%
- **media rating:** Nominal
- **beta ratio:** 10
- **changeout dp:** 15 PSID
- **burst pressure:** 35 PSID
- **max temperature:** 200°F
- **approvals certifications:** FDA Listed

## Housing Compatibility
- Fil-Trek TW Series

## Ordering
- Model format: `TW-[MEDIA]-[MICRON]-[FLANGE]`
- Examples:
  - `TW-PO-5-PS`
  - `TW-PE-10-PS`

### Media codes
- **PO:** Polypropylene
- **PE:** Polyester

### Flange codes
- **PS:** PLASTIC SURE SEAL (STD)
- **CS:** GALVANIZED STEEL RING

### Size codes
- **TW:** OD 7.06"

### Micron ratings
- 0.5, 1, 3, 5, 10, 25, 50, 75, 100, 200

## Contact
- **sales@fil-trek.com** — all filtration product inquiries, projects, filter housings, and filtration systems
- **filters@fil-trek.com** — replacement filter media, filter elements, filter bags, hardware, and spare parts

## Links
- HTML: https://www.fil-trek.com/products/bag-filters/tw
- Markdown: https://www.fil-trek.com/products/bag-filters/tw.md