Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNW 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 5 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNW
The GAFR300N08ALNW is a filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. This 1/4in model operates in the lower pressure band of 0.15-0.4 MPa (20-58 psi) and comes with a 5 um filter element for catching fine particles.
Its nylon bowl and automatic drain make it suitable for applications where condensate needs to be expelled without manual attention. The unit weighs 500 g and features a balanced regulator mechanism that maintains a steady outlet pressure as supply varies, with a self-locking knob that resists vibration-induced drift.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNW |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| 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. No gauge is supplied with this model — the gauge connection on a GAFR300 is 1/8" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNW
| 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. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 psi). This body offers Standard (S) or Lower pressure (L). |
| (blank) | Mounting bracket included. |
| N | No pressure gauge; 1/8" gauge connection. |
| W | Filtering grade 5 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 GAFR300N08ALNW Is Used
Precision valve control
Feed a precision pneumatic valve or small actuator that requires a stable, lower regulated pressure. The 5 um element protects sensitive internal components from fine particulates.
Instrument air supply
Supply instrument air to a laboratory or testing rig where the lower pressure range is sufficient. The automatic drain keeps the 60 cc bowl from filling up during extended operation.
Compact machine station
Mount this 500 g unit on a compact assembly station or small jig. The included bracket allows secure panel mounting, and the nylon bowl provides a clear view of condensate levels.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNW the Right Air-Prep Unit?
Choose this GAFR300 when your line needs 1/4in ports and the lower 0.15-0.4 MPa pressure range. The nylon bowl offers an alternative to PC or metal; the automatic drain handles wet lines without manual intervention. The 5 um element traps finer particles than the standard 40 um, though it will require more frequent service. This model includes the mounting bracket but omits the gauge, so the 1/8in gauge connection is available if you add one later. PT threads with MPa/psi scale are standard. If oil is needed downstream, order the matching GAFC300-08 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 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 GAFR300N08ALNW FAQ
The GAFR300N08ALNW is a filter & regulator with a 1/4in port, working pressure range of 0.15-0.4 MPa (20-58 psi), maximum pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates in temperatures from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g. The unit comes with a 5 um element and an automatic drain.
The L code designates the lower pressure type, which tops out at 0.4 MPa (58 psi) instead of the standard 0.9 MPa. The N after the port code means no gauge is supplied, leaving the 1/8in gauge connection available for adding one. This configuration suits applications that only need modest pressures and where operators will use an external gauge.
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