Airtac GAF Filter GAF400N10J
The AirTAC Airtac GAF Filter GAF400N10J is a genuine compressed-air filter. Its diversion structure spins the air to separate liquid water and trap solid particles down to 40 µm, protecting downstream valves and tools. It has 3/8" ports and a 100 cc drain bowl. It is a filter only — it does not regulate or set pressure.
- TypeAir filter
- Port size3/8"
- Filtering grade40 µm
- Pressure range0.15 - 0.9 MPa
- Bowl materialNylon
- Drainsemi-auto + manual
- Drain bowl100 cc
- Weight640 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAF Filter GAF400N10J
The GAF400N10J is a filter-only unit that spins incoming air to throw liquid water and solid particles into its 100 cc drain bowl, while the HDPE core traps fine grain. This 640 g, 3/8in model has a nylon bowl and no mounting bracket, so plan for a panel or frame mount rather than supporting it from the tubing.
It ships with both a semi-auto and a manual drain, and uses a 40 um element for general-purpose filtration. Rated for 0.15-0.9 MPa (20-130 psi) and -5 to 70 C, it must not freeze. This unit cleans the air but does not regulate pressure, so pair it with a separate regulator if you need to set a downstream pressure.
Airtac GAF Filter GAF400N10J Technical Specifications
| Model | Airtac GAF Filter GAF400N10J |
|---|---|
| Series | GAF400 air filter |
| Port size | 3/8" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Bowl material | Nylon |
| Drain type | Semi-auto drain + manual drain |
| Bracket | Not included (J) |
| Fluid | Air |
|---|---|
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 100 cc |
| Element | HDPE filter core |
| Weight | 640 g |
Specifications follow the official AirTAC GAF catalogue (pages 225-226). Air must not freeze in the unit. This is a filter only — it separates water and solid particles but does not set or hold a downstream pressure. To regulate pressure as well, use the matching GAFR400 filter-regulator.
Model Code: Airtac GAF Filter GAF400N10J
| GAF400 | GA400 series air filter — sets the port range, drain-bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 10 | Port size 3/8". This body offers 10 = 3/8", 15 = 1/2". |
| (blank) | Drain: Semi-auto drain + manual drain. |
| J | No bracket (J) — supplied without the mounting bracket. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT port thread. |
A GAF has no regulator and no pressure gauge — there is no type, gauge or reflux code. Need to regulate pressure too? The matching GAFR400-10 is the same filter with a built-in regulator.
Size Class & Flow Envelope
- GAF2001/8"-1/4" · 3000 L/min
- GAF3001/4"-1/2" · 6000 L/min
- GAF4003/8"-1/2" · 8000 L/min
- GAF5003/4" · 9000 L/min
- GAF6003/4"-1" · 12000 L/min
Figures are the end of the flow curve plotted in the AirTAC catalogue — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. A filter this size drops less pressure at flow than the same-body GAFR filter-regulator, so match it to your peak demand.
| This model | GAF400 · 3/8" · curve to 8000 L/min |
|---|---|
| One size down | GAF300 |
| One size up | GAF500 (curve to 9000 L/min) |
| Add regulation | GAFR400-10 (filter + regulator) |
Where the Airtac GAF Filter GAF400N10J Is Used
CNC coolant lines
Protect solenoid valves on a CNC machine from water and scale that would otherwise cause sticking and premature wear.
Paint booth air prep
Clean the air feeding pneumatic atomizers in a paint booth, keeping water droplets out of the finish.
Assembly station feeds
Supply filtered air to multiple workstations on an assembly line, where the 100 cc bowl handles moderate condensate loads.
Is the Airtac GAF Filter GAF400N10J the Right Filter?
Choose the GAF400 body when you need 3/8in or 1/2in ports and a 100 cc condensate bowl, stepping up from the GAF300's 60 cc bowl when you want fewer drain interventions. The nylon bowl is a build choice for your environment, and the J code means no bracket is included, so use an existing bracket or panel mount. The 40 um element suits general shop air, while the W version traps finer 5 um particles for precision valves. This model has a PT thread standard; select G or NPT to match your fittings. The proof pressure of 1.5 MPa against the 0.9 MPa working maximum gives about a 1.67x safety margin, though it is a burst-test proof, not a license to exceed the rated range.
Quick checklist
- ✓ Body size for your peak flow (3/8" here)
- ✓ Element 40 µm (general) or 5 µm (fine)
- ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
- ✓ Drain: semi-auto + manual, or automatic
- ✓ Bracket kept or removed (J)
- ✓ Need pressure control too? Use GAFR400
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, bowl accessible.
- check Place the filter FIRST in the air-prep train, ahead of any regulator or lubricator.
- check Keep pressure at or below the 1.5 MPa (215 psi) proof limit.
- check Drain condensate before the 100 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 640 g unit on its bracket, not on the tubing.
This is a filter only — it removes water and solid particles but adds no pressure control and no lubrication. Add a GAR regulator, a GAL lubricator, or step up to the GAFR400-10 filter-regulator as your air-prep needs grow.
Airtac GAF Filter GAF400N10J FAQ
It is a 3/8in port air filter with a 40 um HDPE element, a 100 cc nylon bowl, and a weight of 640 g. The working pressure range is 0.15-0.9 MPa (20-130 psi), proof pressure is 1.5 MPa (215 psi), and the temperature range is -5 to 70 C. The flow curve is plotted to 8000 L/min.
The J code means the mounting bracket is not included. You will need to use an existing bracket or provide a panel mount. The unit itself is a filter only, so it does not regulate pressure; for that, you would need the matching GAFR400-10 filter-regulator.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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