Airtac GAF Filter GAF400N15A
The AirTAC Airtac GAF Filter GAF400N15A 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
- Drainautomatic
- 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 GAF400N15A
The GAF400N15A is a genuine AirTAC air filter that uses a diversion structure to spin incoming air, throwing liquid water and solid particles into its 100 cc nylon bowl while the HDPE element traps fine grain. It is a filter only, with no regulator or pressure gauge, and it protects downstream valves and cylinders from water and dirt.
This model has a 1/2in port, a 40 um filtering grade, and an automatic drain that expels condensate without manual attention. Weighing 640 g, it is a mid-size unit that needs a proper panel or frame mount rather than support from the tubing, and its flow curve is plotted to 8000 L/min for sizing against smaller or larger bodies.
Airtac GAF Filter GAF400N15A Technical Specifications
| Model | Airtac GAF Filter GAF400N15A |
|---|---|
| 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 | Automatic 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 GAF400N15A
| 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". |
| A | Drain: Automatic drain. |
| (blank) | Mounting bracket included. |
| (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 GAF400N15A Is Used
CNC machine air prep
Protect a CNC machine's precision valves and actuators from water and particulates in the compressed air supply, with the automatic drain handling condensate during long automated runs.
Assembly line stations
Feed a single assembly station or a small bank of pneumatic tools with clean air, using the 1/2in port to match typical distribution headers and the 100 cc bowl to reduce maintenance stops.
Packaging equipment
Guard the cylinders and sensors on packaging machines from dirty air, where the 40 um element traps general workshop dust and the automatic drain suits continuous production shifts.
Is the Airtac GAF Filter GAF400N15A the Right Filter?
Choose the GAF400N15A when your line needs 1/2in porting and a 100 cc drain bowl, which holds about 1.7x the condensate of the GAF300's 60 cc bowl, meaning fewer drain checks. The nylon bowl is a build and environment choice, so confirm compatibility for aggressive surroundings. This model ships with the mounting bracket included, uses a 40 um element for general-purpose filtration, and has an automatic drain for unattended or wet lines. The PT thread standard must match your fittings, and if you also need pressure control, use the matching GAFR400-15 filter-regulator instead. The 1.5 MPa proof pressure provides 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 GAF400N15A FAQ
The GAF400N15A is a filter only with a 40 um filtering grade, a working pressure range of 0.15-0.9 MPa (20-130 psi), a proof pressure of 1.5 MPa (215 psi), and a temperature range of -5 to 70 C. It has a 100 cc drain bowl and weighs 640 g, with a flow curve plotted to 8000 L/min.
The A code means this model has an automatic drain that expels accumulated condensate automatically, ideal for unattended operation or wet compressed air lines. It does not require manual draining, unlike the semi-auto and manual drains on models without the A code.
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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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