# STRATIS SILVER (STS)

> Fil-Trek Cartridge Filters. Canonical page: https://www.fil-trek.com/products/cartridge-filters/sts

Category: Cartridge Filters
Series: STS
Model format: `STS-[MICRON]-[LENGTH]-[END CAP]-[SEAL]`
Example: `STS-1-30-E2-BN`

## Overview
Nominally rated, meltblown polypropylene depth cartridge for economical particulate reduction across water, chemical, food and beverage, and electronics applications

## How It Works
Fluid flows outside-in through multi-zone depth media where larger particles are trapped in outer layers and finer contaminants in the inner matrix

## Applications
- Cost-effective RO pretreatment and general water/process polishing
- Bulk chemical and coatings/inks guard filtration
- Electronics rinse water and food & beverage clarification
- Utility line, tank fill, and equipment protection at 0.5–100 µm
- Data centers: TCS CDU filtration, FWS cooling tower, chilled water filtration

## Physical Specifications
- **flow direction:** Outside-to-inside
- **backwash-able:** No
- **outside diameter options:** 2.5"
- **inner diameter options:** 1.0"
- **nominal length options:** 10", 20", 30", 40"
- **end cap options:** DOE W/ Cut Ends, DOE W/ Gaskets, DOE W/ Extended Core, SOE W/ 222, 222/Fin Single Open End, SOE W/ 226, 226/Fin Single Open End, Self Seal Spring End, Direct Bond Gaskets
- **caps materials:** Polypropylene
- **cores materials:** Polypropylene
- **gasket material options:** Buna-N, EPDM, Silicone, Viton, Teflon encap. Viton

## Media Specifications
- **media primary options:** Polypropylene
- **micron ratings:** 0.5, 1, 3, 5, 10, 20, 30, 50, 75, 100
- **efficiency percent:** 90%
- **media rating:** Nominal
- **beta ratio:** 10
- **changeout dp:** 35 PSID
- **burst pressure:** 150 PSID
- **max temperature:** 180°F
- **approvals certifications:** USP Class VI, FDA Listed, NSF 61

## Housing Compatibility
- Standard cartridge filter housings

## Ordering
- Model format: `STS-[MICRON]-[LENGTH]-[END CAP]-[SEAL]`
- Example: `STS-1-30-E2-BN`

### Length codes
- **STD:** See Table

### Seal codes
- **Blank:** None (E1 only)
- **BN:** Buna-N
- **EP:** EPDM
- **SI:** Silicone
- **VI:** Viton
- **TEV:** Teflon encap. Viton

### Cap codes
- **E1:** DOE W/ Cut Ends
- **E2:** DOE W/ Gaskets
- **E3:** DOE W/ Extended Core
- **E4:** 222/Flat Single Open End
- **E5:** 222/Fin Single Open End
- **E6:** 226/Flat Single Open End
- **E7:** 226/Fin Single Open End
- **E9:** Self Seal Spring (one end only)
- **E16:** Direct Bond Gasket

### Micron ratings
- 0.5, 1, 3, 5, 10, 20, 30, 50, 75, 100

## 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/cartridge-filters/sts
- Markdown: https://www.fil-trek.com/products/cartridge-filters/sts.md