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GFN Series Compressed Air Filters
| PRODUCT | GRADES | FLOW | RATING |
|---|---|---|---|
| Inline Coalescing Filter | M1, M01, AC | 6 to 1,500 SCFM | 232 psig / 176°F |
Specifications
Configuration & Size
Housings:
0006, 0015, 0025, 0032, 0050, 0070, 0085, 0105, 0125, 0175, 0280, 0325, 0450, 0700, 0850, 0900, 1250, 1500
Connections:
1/8 in NPT to 3 in NPT
Elements:
GE (size) (grade); several housings share one element size
Drains:
Float drain on M1 and M01, manual drain on AC
Features
- M1: 1 micron particulate and coalescing, 0.3 ppm oil at 68°F, ISO class 3; the prefilter that keeps oil and rust off the dryer exchanger
- M01: 0.01 micron high-efficiency coalescer, 0.01 ppm oil, ISO class 2; the afterfilter for tools, valves, paint and packaging
- AC: activated carbon, 0.003 ppm, ISO class 1; goes downstream of an M01, never in front of one
- Tested to ISO 12500 so the ppm figures are measured, not estimated
Three grades that map onto the ISO 8573-1 oil classes
M1 before the dryer, M01 after it, AC where vapor matters
The GFN Series is the current general-purpose inline filter for the cycling, non-cycling and high-temperature dryers here. Eighteen die-cast aluminum housings run from 6 SCFM on 1/8 in NPT to 1,500 SCFM on 3 in NPT, and each is ordered with one of three grades: M1, a 1 micron coalescing prefilter that holds oil carryover to 0.3 ppm; M01, a 0.01 micron coalescer at 0.01 ppm; or AC, an activated-carbon adsorber that takes oil vapor down to 0.003 ppm. The dryer tables pair an M1 prefilter with an M01 afterfilter of the same housing for every cycling dryer size, so the filter set is settled with the dryer.
Housing built for a fast element change. Die-cast aluminum with an electrocoat inside and out and a powder coat outside; condensate and acidic oil do not pit the bowl; No tie rod through the element, so the bowl unscrews and the element drops free in one motion; Deep-pleated borosilicate microfiber media on glass-filled nylon end caps, sized for low pressure drop; Automatic float drain fitted on M1 and M01 housings; differential pressure gauge kit GFDP 0050 or GFDP 1500 adds the change indicator.
Matched to the dryer by size code. A 105 SCFM cycling dryer takes GFN 0105 M1 in and GFN 0105 M01 out on 1 in NPT; a 400 SCFM unit takes the 0450 pair on 2 in; The high-temperature dryers take an M1 inlet filter from GFN 0050 to GFN 0175 ahead of the 180°F inlet; Element sharing keeps stock simple: GFN 0070, 0085 and 0105 all use the GE 0105 element.
GFN Series Filters Part Numbers
| Part Number | SCFM | Connection | Grade | Element |
|---|---|---|---|---|
| GFN 0006 M1 | 6 | 1/8 in NPT | M1 | GE 0015 M1 |
| GFN 0015 M1 | 15 | 1/4 in NPT | M1 | GE 0015 M1 |
| GFN 0025 M1 | 25 | 1/4 in NPT | M1 | GE 0032 M1 |
| GFN 0032 M1 | 32 | 3/8 in NPT | M1 | GE 0032 M1 |
| GFN 0050 M1 | 50 | 1/2 in NPT | M1 | GE 0050 M1 |
| GFN 0070 M1 | 70 | 1/2 in NPT | M1 | GE 0105 M1 |
| GFN 0085 M1 | 85 | 3/4 in NPT | M1 | GE 0105 M1 |
| GFN 0105 M1 | 105 | 1 in NPT | M1 | GE 0105 M1 |
| GFN 0125 M1 | 125 | 3/4 in NPT | M1 | GE 0175 M1 |
| GFN 0175 M1 | 175 | 1 in NPT | M1 | GE 0175 M1 |
| GFN 0280 M1 | 280 | 1-1/4 in NPT | M1 | GE 0325 M1 |
| GFN 0325 M1 | 325 | 1-1/2 in NPT | M1 | GE 0325 M1 |
| GFN 0450 M1 | 450 | 2 in NPT | M1 | GE 0450 M1 |
| GFN 0700 M1 | 700 | 2 in NPT | M1 | GE 0700 M1 |
| GFN 0850 M1 | 850 | 2-1/2 in NPT | M1 | GE 0900 M1 |
| GFN 0900 M1 | 900 | 3 in NPT | M1 | GE 0900 M1 |
| GFN 1250 M1 | 1,250 | 3 in NPT | M1 | GE 1250 M1 |
| GFN 1500 M1 | 1,500 | 3 in NPT | M1 | GE 1500 M1 |
Flows are at 100 psig; each housing is also supplied as the M01 and AC grade under the same size code, with the matching GE element, and the note column shows the cycling dryer size each housing is paired with.
GFN Series Filters Applications
Dimensions and mounting
Ports in line through the head, bowl down, element out below.
The housing sits upright in the line with the inlet and outlet in the head and the bowl hanging below. The arrow on the head sets the flow direction; the coalescing element drains oil down its outside surface, and a housing installed backwards blows that oil straight into the dryer or the tools. Leave room under the bowl for the bowl length plus the element length so the element can be pulled without disturbing the pipe, and keep the housing within reach of a wrench: on the 0700 and larger sizes on 2 in to 3 in pipe the bowl is long enough that a housing tucked under a receiver cannot be serviced.
The float drain discharges from the bottom of the bowl; run a tube to a condensate line rather than letting it drip. The AC housing has a manual drain because a carbon element must run dry; anything wet reaching it is a sign the M01 ahead of it has failed. Fit the differential pressure gauge on the head where it can be read from the walkway.
Confirm the housing height, the port size and the drain kit with the quote; the drawing above is representative of the threaded housings.
Common FAQs
6 to 1,500 SCFM
- Housings: 0006, 0015, 0025, 0032, 0050, 0070, 0085, 0105, 0125, 0175, 0280, 0325, 0450, 0700, 0850, 0900, 1250, 1500
- Connections: 1/8 in NPT to 3 in NPT
- Elements: GE (size) (grade); several housings share one element size
- Drains: Float drain on M1 and M01, manual drain on AC
- Max pressure: 232 psig; minimum 22 psig on 0070 and up
- Temperature: 32 to 176°F (M1, M01); 32 to 122°F (AC)
- ISO 8573-1 oil: M1 class 3, M01 class 2, AC class 1
- Element change: 12 months for M1 and M01; 1,000 hours for AC
- Warranty: 10 years on the housing
