Airtac GAF Filter GAF500N20AJ
The AirTAC Airtac GAF Filter GAF500N20AJ 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 3/4" ports and a 108 cc drain bowl. It is a filter only — it does not regulate or set pressure.
- TypeAir filter
- Port size3/4"
- Filtering grade40 µm
- Pressure range0.15 - 0.9 MPa
- Bowl materialNylon
- Drainautomatic
- Drain bowl108 cc
- Weight680 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 GAF500N20AJ
The GAF500N20AJ is a filter-only unit that spins incoming air to throw liquid water and solid particles into its 108 cc nylon bowl, while the 40 um HDPE element traps fine grain. It has no regulator, no gauge and no lubricator - it cleans the air but never sets pressure.
This 3/4in model weighs 680 g and its flow curve is plotted to 9000 L/min, placing it in the upper size class between the GAF400 (100 cc bowl) and the GAF600 (205 cc bowl). The automatic drain clears condensate without manual attention, and the nylon bowl is a build choice whose compatibility for aggressive surroundings should be confirmed with the factory.
Airtac GAF Filter GAF500N20AJ Technical Specifications
| Model | Airtac GAF Filter GAF500N20AJ |
|---|---|
| Series | GAF500 air filter |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Bowl material | Nylon |
| Drain type | Automatic 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 | 108 cc |
| Element | HDPE filter core |
| Weight | 680 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 GAFR500 filter-regulator.
Model Code: Airtac GAF Filter GAF500N20AJ
| GAF500 | GA500 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). |
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| A | Drain: Automatic 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 GAFR500-20 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 | GAF500 · 3/4" · curve to 9000 L/min |
|---|---|
| One size down | GAF400 |
| One size up | GAF600 (curve to 12000 L/min) |
| Add regulation | GAFR500-20 (filter + regulator) |
Where the Airtac GAF Filter GAF500N20AJ Is Used
Machine header feed
Feed a 3/4in header supplying multiple pneumatic stations on a production machine, where the 108 cc bowl and automatic drain handle continuous operation without manual checks.
Multi-station assembly line
Protect a bank of valves and cylinders on an assembly line with several workstations, using the 9000 L/min curve to size for simultaneous air demand.
High-flow tool circuit
Supply a high-consumption air tool circuit where the 3/4in port keeps pressure loss low and the 40 um element guards against pipe scale and water carryover.
Is the Airtac GAF Filter GAF500N20AJ the Right Filter?
Choose the GAF500 body when a 3/4in port and a 108 cc drain bowl match your line's condensate load; it sits above the GAF400 (100 cc bowl, 8000 L/min curve) and below the GAF600 (205 cc bowl, 12000 L/min curve). The nylon bowl is a material option with no printed temperature or chemical advantage, so verify it against your environment. This model has the automatic drain (A), no bracket (J), a 40 um element and PT port threads - pick the 5 um W element for finer filtration or a G/T thread code to match your fittings. If the line also needs a set pressure, use the matching GAFR500-20 filter-regulator instead. The GAF500's 108 cc bowl holds about 1.35x the condensate of the GAF400's 100 cc bowl, so expect fewer drain interventions at this size.
Quick checklist
- ✓ Body size for your peak flow (3/4" 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 GAFR500
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 108 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 680 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 GAFR500-20 filter-regulator as your air-prep needs grow.
Airtac GAF Filter GAF500N20AJ FAQ
The GAF500N20AJ is a filter-only unit with a 3/4in port, 40 um filtering grade, 108 cc drain bowl and 680 g weight. Working pressure is 0.15-0.9 MPa (20-130 psi), proof pressure is 1.5 MPa (215 psi), and temperature range is -5 to 70 C. The flow curve is plotted to 9000 L/min. It has a nylon bowl, automatic drain, no bracket and PT threads.
The A code means an automatic drain that expels condensate without manual operation, suited for unattended or wet lines. This model has it, so you do not need to open a manual valve. The blank drain option would include both semi-auto and manual drains, but this GAF500N20AJ is automatic only.
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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