Airtac GAF Filter GAF400N15J
The AirTAC Airtac GAF Filter GAF400N15J 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 1/2" ports and a 100 cc drain bowl. It is a filter only — it does not regulate or set pressure.
- TypeAir filter
- Port size1/2"
- 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 GAF400N15J
The GAF400N15J is a filter-only unit that spins incoming air to throw liquid water and solid particles into its 100 cc nylon bowl, while the HDPE core traps fine grain. It has no regulator, no gauge, and no lubricator - it cleans the air but never controls pressure.
This 1/2in model carries a 40 um element and weighs 640 g, placing it in the mid-size GAF400 class. With both semi-auto and manual drains fitted, it suits lines where an operator is present to empty the bowl periodically.
Airtac GAF Filter GAF400N15J Technical Specifications
| Model | Airtac GAF Filter GAF400N15J |
|---|---|
| Series | GAF400 air filter |
| Port size | 1/2" (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 GAF400N15J
| 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). |
| 15 | Port size 1/2". 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 GAFR400-15 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 · 1/2" · curve to 8000 L/min |
|---|---|
| One size down | GAF300 |
| One size up | GAF500 (curve to 9000 L/min) |
| Add regulation | GAFR400-15 (filter + regulator) |
Where the Airtac GAF Filter GAF400N15J Is Used
Machine tool air prep
Feed a 1/2in line serving a CNC lathe's chuck cylinder and coolant valves, where the 100 cc bowl handles typical shift-long condensate.
Panel-mount retrofit
The J (no bracket) code suits an existing control panel with pre-drilled holes, letting you swap in this filter without extra hardware.
Assembly station header
Protect a multi-fixture workbench with 40 um filtration, where the semi-auto drain is emptied during scheduled line stops.
Is the Airtac GAF Filter GAF400N15J the Right Filter?
Choose the GAF400N15J when your line needs 1/2in ports and a 100 cc condensate bowl, which holds about 1.7x the volume of the GAF300's 60 cc bowl. The nylon bowl is a build choice - confirm compatibility for aggressive surroundings since no chemical data is printed. The J code means no bracket is included, so plan for panel mounting or an existing bracket. The 40 um element handles general workshop air; step up to the W version for 5 um filtration if you have precision valves. Thread is PT standard. If you also need a set pressure, use the matching GAFR400-15 filter-regulator instead. The flow envelope plotted to 8000 L/min is 1.33x the GAF300's 6000 L/min curve, letting you size up within the same family.
Quick checklist
- ✓ Body size for your peak flow (1/2" 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 GAFR400-15 filter-regulator as your air-prep needs grow.
Airtac GAF Filter GAF400N15J FAQ
Filtering grade is 40 um. Working pressure range is 0.15-0.9 MPa (20-130 psi), proof pressure 1.5 MPa (215 psi). Temperature range is -5 to 70 C. Drain bowl capacity is 100 cc, weight is 640 g, and the flow curve is plotted to 8000 L/min.
The J code means the mounting bracket is NOT included. You get the filter body with nylon bowl, 1/2in PT ports, semi-auto and manual drains, and a 40 um element - but no bracket, so mount it to a panel or use an existing bracket.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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