Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNWK 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 - 0.9 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 grade5 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNWK
The GAFR300N08ASNWK is a genuine AirTAC filter & regulator combining both functions in one body. It cleans incoming air through a diversion structure that spins out liquid water and solid particles, then a balanced regulator holds your set outlet pressure steady. This 1/4in unit has a nylon bowl and a 5 um element for finer filtration, with no lubricator fitted.
Working pressure spans 0.15-0.9 MPa (20-130 psi), with a 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. The 60 cc condensate bowl and 500 g mass place it in the mid-size GAFR300 class, and the automatic drain handles wet lines without manual attention. Operating temperature is -5 to 70 C and the unit must not freeze.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNWK |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 5 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. 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 GAFR300N08ASNWK
| 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. |
| N | No pressure gauge; 1/8" gauge connection. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
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 GAFR300N08ASNWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly machine where the 5 um element protects fine internal passages and the balanced regulator keeps pilot pressure stable.
Test bench air supply
Supply a laboratory test fixture with clean, regulated air at up to 0.9 MPa, where the automatic drain prevents water carryover during long unattended test cycles.
Single actuator station
Power one pneumatic actuator or a small indexing table on a production line, using the 1/4in port and 500 g body for a compact, vibration-resistant installation.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNWK the Right Air-Prep Unit?
Choose this GAFR300 body for 1/4in ports where you need both filtration and regulation in a single mounting point. The nylon bowl is a build choice for your environment, and the 5 um element traps finer particles than the standard 40 um grade, though it will need more frequent service. The automatic drain suits unattended operation, while the included bracket simplifies panel mounting, and the PT thread carries an MPa/psi gauge scale. A reverse-flow valve is fitted as an ordering difference, and if you need lubrication downstream, order the matching GAFC300-08 combination instead. Note that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the 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 GAFR300N08ASNWK FAQ
Working pressure is 0.15-0.9 MPa (20-130 psi), maximum pressure is 1.0 MPa (145 psi), and proof pressure is 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 60 cc and the unit weighs 500 g. It has a 1/4in port, 5 um filter element, automatic drain, nylon bowl, and no gauge.
The 'N' after the port code means no gauge is supplied. If you need to read the set pressure, you can add one later using the 1/8in gauge connection on the GAFR300 body. Without a gauge, you cannot visually confirm the outlet pressure setting.
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