Airtac GAF Filter GAF400N15W
The AirTAC Airtac GAF Filter GAF400N15W is a genuine compressed-air filter. Its diversion structure spins the air to separate liquid water and trap solid particles down to 5 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 grade5 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 GAF400N15W
The GAF400N15W is a genuine AirTAC air filter that spins incoming air to throw liquid water and solid particles into its 100 cc nylon drain bowl, while the 5 um HDPE element traps fine grain. It is a filter only, with no pressure regulation or gauge, and it protects downstream valves and cylinders from contamination.
This 1/2in port model weighs 640 g and sits in the GAF400 size class, which is a step up from the GAF300's 360 g body. The nylon bowl is a build choice for the environment, and you should confirm compatibility for aggressive surroundings since no chemical data is printed.
Airtac GAF Filter GAF400N15W Technical Specifications
| Model | Airtac GAF Filter GAF400N15W |
|---|---|
| Series | GAF400 air filter |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Bowl material | Nylon |
| Drain type | Semi-auto drain + manual drain |
| Bracket | Included |
| 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 GAF400N15W
| 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. |
| (blank) | Mounting bracket included. |
| W | Filtering grade 5 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 GAF400N15W Is Used
Machine Tool Protection
Feed a single CNC machine's solenoid valves with clean, 5 um filtered air from a 1/2in line, keeping fine abrasive dust out of precision spools and orifices.
Instrument Air Pre-Filter
Protect sensitive pneumatic instruments and gauges downstream by removing water droplets and solid particles before they reach calibration-critical components.
Assembly Station Supply
Supply a multi-station assembly bench where several air tools and actuators share one 1/2in header, with the 100 cc bowl reducing drain frequency between shifts.
Is the Airtac GAF Filter GAF400N15W the Right Filter?
Choose the GAF400 body when your line needs a 1/2in port and the 100 cc drain bowl that suits moderate condensate loads; the GAF300 below it offers a 60 cc bowl with a 6000 L/min curve, while the GAF500 above adds a 3/4in port and 108 cc bowl. The nylon bowl is a material choice for the build, and the included mounting bracket supports the 640 g unit properly. The 5 um element traps finer particles than the standard 40 um, at the cost of more frequent service, and the PT thread standard must match your fittings. If you also need a set pressure, use the matching GAFR400-15 filter-regulator instead, since this GAF does not regulate. The 1.5 MPa proof pressure gives about a 1.67x margin over the 0.9 MPa top of the working range.
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 GAF400N15W FAQ
The GAF400N15W is a 1/2in port air filter with a 5 um HDPE element. Its working pressure range is 0.15-0.9 MPa (20-130 psi), with a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and must not freeze. The drain bowl capacity is 100 cc and the unit weighs 640 g.
The N in GAF400N15W indicates a nylon bowl, which is a material choice for the build. The common specification is identical for PC, metal, and nylon bowls, so you should confirm compatibility for your specific environment since no temperature, chemical, or impact data is printed. This model also includes the mounting bracket and has a semi-auto plus manual drain.
Authorized Export Seller
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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