Airtac GAF Filter GAF50020AJW
The AirTAC Airtac GAF Filter GAF50020AJW 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 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 grade5 µm
- Pressure range0.15 - 0.9 MPa
- Bowl materialPC
- 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 GAF50020AJW
The GAF50020AJW is a filter-only unit that spins incoming air to throw liquid water and solid particles into its 108 cc drain bowl, while the 5 um HDPE core traps fine grain. It has no regulator, no pressure gauge and no lubricator - it cleans the air but never controls pressure.
This 3/4in model weighs 680 g and is rated for 0.15-0.9 MPa (20-130 psi) working pressure with a 1.5 MPa (215 psi) proof pressure. The automatic drain clears condensate without manual attention, and the missing bracket (J) suits panel-mount installations where the 680 g mass needs proper support.
Airtac GAF Filter GAF50020AJW Technical Specifications
| Model | Airtac GAF Filter GAF50020AJW |
|---|---|
| Series | GAF500 air filter |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Bowl material | PC |
| 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 GAF50020AJW
| GAF500 | GA500 series air filter — sets the port range, drain-bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. 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. |
| 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 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 GAF50020AJW Is Used
Machine Header Feed
A 3/4in GAF500 cleans air for a multi-station machining center where several valves and cylinders draw from one common header. The 108 cc bowl and automatic drain handle the condensate load from a busy production shift.
Paint Booth Air Supply
Feed a 3/4in line to pneumatic atomizers in a finishing booth. The 5 um element traps fine particles that could clog spray tips, while the automatic drain keeps water out of the air stream without manual checks.
Packaging Line Pneumatics
Protect the valves and cylinders on a high-speed carton erector. The GAF500's 9000 L/min flow envelope supports the intermittent demand of multiple actuators, and the 680 g body mounts securely on the machine frame.
Is the Airtac GAF Filter GAF50020AJW the Right Filter?
Choose the GAF500 for 3/4in lines that need heavy condensate handling; its 108 cc bowl holds about 1.7x the water of the GAF400's 100 cc bowl. The PC bowl suits general shop air, while the automatic drain (A) handles wet or unattended lines. The 5 um element (W) protects precision valves but needs more frequent service than the 40 um standard. The J code omits the bracket for existing mounts, and PT threads match common local fittings. If you need a set pressure, step up to the GAFR500-20 filter-regulator instead. The 9000 L/min flow envelope is 1.5x the GAF400's 8000 L/min curve, so this body can feed larger machine headers without excessive pressure drop.
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 GAF50020AJW FAQ
This filter-only unit has a 5 um HDPE element, 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. The drain bowl holds 108 cc and the unit weighs 680 g. The flow curve is plotted to 9000 L/min.
The A code means the GAF50020AJW has an automatic drain that expels condensate without manual intervention. This suits wet compressed air lines or installations where operators cannot regularly check the bowl. The J code means no mounting bracket is included, so plan for a panel mount or existing bracket.
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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