# Microglass Hydraulic (PH)

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

Category: Cartridge Filters
Series: PH
Model format: `PH-[SIZE CODE]-[EFFICIENCY CODE]-[SEAL]-[OPTIONS]`
Example: `PH-312-11-BN`

## Overview
High-performance hydraulic filter element for cleanliness-critical lube and fluid power systems across industrial services

## How It Works
Fluid flows outside-to-inside through a pleated depth-surface matrix; particles are captured by size exclusion and depth loading 

## Applications
- Hydraulic pressure/return line particulate control
- Turbine/compressor lube oil cleanliness
- Gearbox and bearing oil filtration
- Water-glycol/hydraulic fluid filtration
- Coolant/cutting-fluid particulate removal
- Chemical transfer/recirculation prefiltration
- Compressor oil mist/coalescing prefilter (particulates)

## Physical Specifications
- **flow direction:** Outside-to-inside
- **backwash-able:** No
- **outside diameter options:** 3.1"
- **inner diameter options:** 1.7"
- **nominal length options:** 7", 8", 12", 13", 17"
- **caps materials:** Steel
- **cores materials:** Steel, Epoxy coated steel
- **gasket material options:** Buna-N, Viton
- **special notes:** Additional sizes available

## Media Specifications
- **media primary options:** Microglass
- **micron ratings:** 2, 3, 4, 5, 6, 9, 10, 11, 12, 14, 15, 16, 17, 20, 24, 25, 27, 40, 41, 43, 50, 51, 53, 64, 69, 74, 100, 110, 125
- **efficiency percent:** 99.5%
- **media rating:** Absolute
- **beta ratio:** 200
- **changeout dp:** 50 PSID
- **burst pressure:** 100 PSID
- **max temperature:** 250˚F
- **approvals certifications:** None

## Housing Compatibility
- Fil-Trek VF Series

## Competitor Cross-Reference
- Hilco/Hilliard PH filter cartridges

## Ordering
- Model format: `PH-[SIZE CODE]-[EFFICIENCY CODE]-[SEAL]-[OPTIONS]`
- Example: `PH-312-11-BN`

### Seal codes
- **B:** Buna-N
- **V:** Viton

### Option codes
- **SOE:** Single open end

### Size codes
- **307:** OD 3.1", ID 1.7", length 7"
- **308:** OD 3.1", ID 1.7", length 8"
- **312:** OD 3.1", ID 1.7", length 12"
- **313:** OD 3.1", ID 1.7", length 13"
- **317:** OD 3.1", ID 1.7", length 17"

### Micron ratings
- 2, 3, 4, 5, 6, 9, 10, 11, 12, 14, 15, 16, 17, 20, 24, 25, 27, 40, 41, 43, 50, 51, 53, 64, 69, 74, 100, 110, 125

### Efficiency codes
- **16:** Beta 200 2, Beta 1000 3
- **14:** Beta 75 2, Beta 200 3, Beta 1000 5
- **12:** Beta 75 3, Beta 200 4, Beta 1000 6
- **11:** Beta 75 9, Beta 200 10, Beta 1000 12
- **01:** Beta 75 14, Beta 200 15, Beta 1000 17
- **03:** Beta 75 24, Beta 200 25, Beta 1000 27
- **05:** Beta 75 40, Beta 200 41, Beta 1000 43
- **10:** Beta 75 50, Beta 200 51, Beta 1000 53
- **20:** Beta 75 64, Beta 200 69, Beta 1000 74
- **40:** Beta 75 100, Beta 200 110, Beta 1000 125

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