Airtac GAF Filter GAF500N20J
The AirTAC Airtac GAF Filter GAF500N20J 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
- Drainsemi-auto + manual
- 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 GAF500N20J
The GAF500N20J is a filter-only unit that spins incoming air to fling liquid water and solid grit into its 108 cc nylon bowl, while the 40 um HDPE core traps fine particles. It protects downstream valves and tools but never regulates pressure, so there is no gauge or adjusting knob on this body.
This 3/4in model weighs 680 g and is built for a machine header or a multi-station line rather than a small jig. Because the bowl is nylon, confirm compatibility with any aggressive chemicals in your environment, as AirTAC prints no solvent or temperature data for bowl materials.
Airtac GAF Filter GAF500N20J Technical Specifications
| Model | Airtac GAF Filter GAF500N20J |
|---|---|
| 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 | 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 | 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 GAF500N20J
| 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". |
| (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 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 GAF500N20J Is Used
Machine header feed
Feed a 3/4in header that supplies multiple pneumatic actuators on a single production machine, where the 108 cc bowl handles the condensate load between shifts.
Multi-station assembly line
Protect a bank of valves feeding several workstations, using the 680 g body bolted to a frame since the J code means no bracket is in the box.
Dusty plant air
Clean general plant air carrying water droplets and scale before it reaches precision tooling, with the 40 um element catching the larger grain that would score valve seats.
Is the Airtac GAF Filter GAF500N20J the Right Filter?
Choose the GAF500 body when your line needs a 3/4in port and the 108 cc condensate bowl that comes with it, stepping down to a GAF400 if 1/2in piping is enough. The nylon bowl is a build choice with the same common spec as PC or metal, so verify it suits your surroundings. This code omits the mounting bracket (J), meaning you must supply your own panel mount or reuse an existing one, and it carries the semi-auto plus manual drain for routine checks. The 40 um element handles general shop air, while the PT port thread matches standard local fittings. If you also need a set pressure, move to the GAFR500-20 filter-regulator instead of expecting this filter to control pressure. The proof pressure of 1.5 MPa against the 0.9 MPa working top gives about a 1.67x safety margin for burst testing, not for running above the rated range.
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 GAF500N20J FAQ
The GAF500N20J is a filter-only unit with a 40 um HDPE element, a 3/4in PT port, and a 108 cc nylon drain bowl. It weighs 680 g and has a flow curve plotted to 9000 L/min. 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. It has both semi-auto and manual drains and no mounting bracket.
The J in the code means the mounting bracket is omitted from the shipment. This suits buyers who panel-mount the filter or already have a bracket in place. You must supply your own mounting hardware, and the 680 g body needs proper support from a frame or panel, not from the tubing alone.
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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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