# High Efficiency (500)

> Fil-Trek Bag Filters. Canonical page: https://www.fil-trek.com/products/bag-filters/500

Category: Bag Filters
Series: 500
Model format: `[MICRON]-[SIZE]-[FLANGE]`
Example: `521A-2-SS`

## Overview
Multi-layer absolute PO depth bag removes fine solids/trace oil with low dP and long life; silicone-free construction and a positive-seal collar minimize bypass in standard housings

## How It Works
Liquid enters the housing and flows from the inside of the bag to the outside through a supported basket. Graded-depth PO layers capture contaminants by surface sieving and depth entrapment, while the seal prevents bypass.

## Applications
- Paints, coatings, inks, defect control, haze, gel & fines removal
- Fine chemicals, resins, adhesives: clarification and particulate control
- Water and wastewater: final polishing, RO/UF pretreatment, condensate cleanup
- Food and beverage: clarification and particulate control
- Data centers: TCS CDU filtration, FWS cooling tower, chilled water filtration

## Physical Specifications
- **flow direction:** Inside-to-outside
- **outside diameter options:** 7.06"
- **nominal length options:** 32"
- **size options:** 2

## Media Specifications
- **media primary options:** Polypropylene
- **micron ratings:** 1, 2.5, 5, 13, 32
- **efficiency percent:** 99%
- **media rating:** Absolute
- **beta ratio:** 1000
- **changeout dp:** 15 PSID
- **burst pressure:** 35 PSID
- **max temperature:** 220°F
- **approvals certifications:** FDA Listed

## Housing Compatibility
- Fil-Trek BMB Series
- Fil-Trek LP Series
- Fil-Trek SL Series
- Fil-Trek PL Series
- Fil-Trek TL Series

## Competitor Cross-Reference
- AJR 500 Series
- 3M 500 Series

## Ordering
- Model format: `[MICRON]-[SIZE]-[FLANGE]`
- Examples:
  - `521A-2-SS`
  - `525A-2-PO`

### Micron codes
- **521A:** 1 Micron
- **523A:** 2.5 Micron
- **525A:** 5 Micron
- **527A:** 13 Micron
- **529A:** 32 Micron

### Flange codes
- **PS:** PLASTIC SURE SEAL
- **SS:** STAINLESS STEEL RING (STD)
- **PO:** POLYPROPYLENE RING

### Size codes
- **2:** OD 7.06", length 32"

### Micron ratings
- 1, 2.5, 5, 13, 32

## 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/500
- Markdown: https://www.fil-trek.com/products/bag-filters/500.md