Airtac GAFR Adjustable Filter Regulator GAFR300N08ALWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ALWK 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 gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALWK
This AirTAC GAFR300N08ALWK is a filter and regulator combined into a single body, so it cleans incoming air and sets a steady outlet pressure without needing a separate filter plus regulator pair. It has a 1/4in port, a lower-pressure range of 0.15-0.4 MPa (20-58 psi), and a 5 um element that traps fine particles for sensitive equipment.
The nylon bowl holds 60 cc of condensate, and the automatic drain clears it without manual attention. A circular gauge with an MPa/psi scale is fitted, and the unit weighs 500 g, making it a compact choice for a small machine station.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ALWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ALWK |
|---|---|
| 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. 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 GAFR300N08ALWK
| 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. |
| (blank) | Circular pressure gauge fitted. |
| 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 GAFR300N08ALWK Is Used
Precision valve control
Feed a single precision pneumatic valve or a small indexing table with clean, regulated air at a stable low pressure, thanks to the 5 um element and the lower-pressure range.
Lab air supply
Supply a laboratory fixture or test rig that needs fine particle filtration and a gentle, consistent pressure below 0.4 MPa, with the automatic drain handling condensate.
Bench assembly station
Power a hand-held pneumatic screwdriver or a small clamping cylinder on a bench assembly line, where the compact 500 g body fits neatly into a tight control panel.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALWK the Right Air-Prep Unit?
Choose the GAFR300 body when you need a 1/4in port and a 60 cc drain bowl, which holds about 2.4 times the condensate of the smaller GAFR200's 25 cc bowl. The nylon bowl is a build option, and the automatic drain suits wet or unattended lines, while the 5 um element filters finer than the standard 40 um grade. The mounting bracket is included, the gauge reads MPa/psi, and the reverse-flow valve is fitted as an ordering difference. If the line needs oil downstream, order the matching GAFC300-08 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above this unit's 0.4 MPa top setting.
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 GAFR300N08ALWK FAQ
The GAFR300N08ALWK is a filter & regulator with a 1/4in port and a lower-pressure range of 0.15-0.4 MPa (20-58 psi). Maximum supply pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), and the operating temperature is -5 to 70 C. The nylon drain bowl holds 60 cc, and the unit weighs 500 g.
The automatic drain expels condensate from the 60 cc bowl without manual intervention, which is useful for wet supply lines or installations where regular draining is inconvenient. This model also includes a 5 um element and a reverse-flow valve, which is fitted as an ordering difference.
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Covers non-human-caused product damage.
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