# Mera Felt (MF)

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

Category: Bag Filters
Series: MF
Model format: `MF-[MEDIA]-[MICRON]-[SIZE]-[FLANGE]-[OPTIONS]`
Example: `MF-PO-10-2-PS`

## Overview
Nominal felt bag filters for standard housings, available in PP/PE/Nomex/PTFE with anti-fiber finishes and multiple seal/ring styles to minimize bypass for reliable prefiltration and polishing

## How It Works
Depth filtration traps particles within a needle-punched felt matrix with nominal efficiency

## Applications
- Water and wastewater prefiltration and intake protection
- Chemical batch filtration and raw material cleanup
- Paints, inks, and coatings gel removal and finishing
- Fuels, oils, amines, and glycols prefiltration
- Metalworking coolants and wash solutions
- Pulp and paper process streams and coating kitchens
- Data centers: TCS CDU filtration, FWS cooling tower, chilled water filtration

## Physical Specifications
- **flow direction:** Inside-to-outside
- **outside diameter options:** Depending on sizes
- **nominal length options:** Depending on sizes
- **size options:** 1, 2, 3, 4, 5, 7, 8, 9, 12

## Media Specifications
- **media primary options:** Polypropylene, Polyester, PTFE, Nomex
- **micron ratings:** 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 (Polypropylene), 275°F (Polyester), 425°F (Nomex), 500°F (PTFE)
- **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

## Ordering
- Model format: `MF-[MEDIA]-[MICRON]-[SIZE]-[FLANGE]-[OPTIONS]`
- Examples:
  - `MF-PO-10-2-PS`
  - `MF-PE-5-1-SS`

### Media codes
- **PO:** Polypropylene
- **PE:** Polyester
- **TF:** PTFE
- **NX:** Nomex

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

### Option codes
- **EB:** EDGE BINDING
- **A:** AUTO SEAMS
- **TTA:** TURN, TOP STICH, AUTO SEAM
- **SB:** SPUN BOND COVER
- **MC:** MESH COVER

### Size codes
- **1:** OD 7.06", length 16.5"
- **2:** OD 7.06", length 32"
- **3:** OD 4.3", length 8"
- **4:** OD 4.3", length 14"
- **5:** OD 4.3", length 24"
- **7:** OD 5.7", length 15"
- **8:** OD 5.7", length 21"
- **9:** OD 5.7", length 32"
- **12:** OD 8.4", length 34"

### Micron ratings
- 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/mf
- Markdown: https://www.fil-trek.com/products/bag-filters/mf.md