Airtac GAFR Adjustable Filter Regulator GAFR300N08AS
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08AS is a genuine two-in-one filter & regulator — a diversion-type water/particulate filter and a balanced pressure regulator built into ONE body. It has 1/4" ports, a 40 µm filter element and regulates 0.15 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08AS
The GAFR300N08AS is a genuine AirTAC filter & regulator that combines air filtration and pressure regulation into a single body, eliminating the need for separate components. This 1/4in port model handles a standard 0.15-0.9 MPa (20-130 psi) range with a 40 um element, and its nylon bowl suits environments where a transparent or metal bowl isn't preferred.
Its diversion structure spins incoming air to separate liquid water and solid particles into the 60 cc drain bowl, while the balanced, self-locking regulator maintains a steady outlet pressure even as supply varies. The automatic drain clears condensate without manual intervention, making this 500 g unit a compact choice for automated equipment.
Airtac GAFR Adjustable Filter Regulator GAFR300N08AS Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08AS |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| Bowl material | Nylon |
| Drain type | Automatic drain |
| Fluid | Air |
|---|---|
| Max. pressure | 1.0 MPa (145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 60 cc |
| Bracket | Included |
| Weight | 500 g |
Specifications follow the official AirTAC GAFR catalogue (pages 235-236). Air must not freeze in the unit. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR300N08AS
| GAFR300 | GA300 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 08 | Port size 1/4". This body offers 08 = 1/4", 10 = 3/8", 15 = 1/2". |
| A | Drain: Automatic drain. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 psi). This body offers Standard (S) or Lower pressure (L). |
| (blank) | Mounting bracket included. |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| (blank) | No reverse-flow valve. |
The filter and the regulator are ONE body here — there is no separate GAF filter or GAR regulator part to assemble. Need lubrication downstream too? Add a lubricator by ordering the matching GAFC300-08 F.R.L. combination instead.
Size Class & Flow Envelope
- GAFR2001/8"-1/4" · 2000 L/min
- GAFR3001/4"-1/2" · 3500 L/min
- GAFR4003/8"-1/2" · 7000 L/min
- GAFR5003/4" · 8000 L/min
- GAFR6003/4"-1" · 12000 L/min
Figures are the end of the flow curve plotted in the AirTAC catalogue at 0.7 MPa inlet pressure — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. Outlet pressure falls as flow rises, so size a body with headroom above your peak demand.
| This model | GAFR300 · 1/4" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-08 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300N08AS Is Used
Precision jig and fixture
Feed a single pneumatic jig or fixture on an assembly line with clean, regulated air at a steady pressure, thanks to the balanced regulator and 40 um filtration.
Automated machine station
Supply a compact machine station's actuators with filtered air, where the automatic drain reduces maintenance checks and the 1/4in port matches small-bore valves.
Test bench air supply
Provide a clean, stable air source for a test bench or lab setup, using the 60 cc bowl to collect condensate and the gauge to monitor set pressure.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08AS the Right Air-Prep Unit?
Choose this GAFR300N08AS when you need a 1/4in port, nylon bowl, and automatic drain in one body. The nylon bowl offers a build option distinct from standard PC or metal, while the automatic drain suits wet or unattended lines. The standard pressure type covers 0.15-0.9 MPa, and the included bracket simplifies mounting; the circular gauge with MPa/psi scale is fitted. If oil is needed downstream, order the matching GAFC300-08 combination instead. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated range.
Quick checklist
- ✓ Body size for your peak flow (1/4" here)
- ✓ Standard 0.9 MPa or lower-pressure 0.4 MPa
- ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
- ✓ Drain: semi-auto + manual, or automatic
- ✓ Element 40 µm or 5 µm
- ✓ Bracket kept or removed (J); add a lubricator = GAFC
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, gauge/knob accessible.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure with the pressed-in self-locking knob; pull to adjust, press to lock.
- check Drain condensate before the 60 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 500 g unit on its bracket, not on the tubing.
This is a filter and regulator only — it delivers filtered, pressure-set air with no added oil. If a downstream tool needs lubrication, add a separate lubricator or order the GAFC300-08 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300N08AS FAQ
The GAFR300N08AS is a filter & regulator with a 1/4in port, standard pressure range of 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 60 cc drain bowl, and 500 g weight. It has a 40 um element, automatic drain, and nylon bowl.
The automatic drain on the GAFR300N08AS clears accumulated condensate from the 60 cc bowl without manual operation, making it ideal for wet lines or unattended installations. This differs from the semi-auto+manual drain option, which requires periodic manual draining.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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