Airtac GAFR Adjustable Filter Regulator GAFR300N08ALK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ALK 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 - 0.4 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 grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALK
The GAFR300N08ALK is a filter and regulator combined in a single body, so incoming air is spun to separate liquid water and solid particles before a balanced regulator sets a steady outlet pressure. This 1/4in unit carries a nylon bowl and a 40 um element, with a lower-pressure range of 0.15-0.4 MPa (20-58 psi).
Because the filter and regulator share one housing, this part replaces a separate GAF filter plus GAR regulator, reducing potential leak points and saving rail space. The pressed-in self-locking knob resists set-pressure drift from vibration, keeping the outlet stable during operation.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ALK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ALK |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 40 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 GAFR300N08ALK
| 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. |
| (blank) | Filtering grade 40 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 GAFR300N08ALK Is Used
Precision pressure setting
Set a stable 0.2 MPa (29 psi) supply for a small pneumatic clamp or a single-acting cylinder on a benchtop assembly fixture, where the lower range gives finer adjustment resolution.
Compact machine build
Mount this 500 g unit on a panel or frame to feed a 1/4in line serving a pick-and-place gripper, taking advantage of the single-body design to save rail width.
Wet-line automation
Use the automatic drain on a humid production line feeding a sensor or a small valve manifold, letting the 60 cc bowl shed condensate without scheduled manual draining.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in or 3/8in ports with a 60 cc condensate bowl and 500 g mass, sitting between the smaller GAFR200 and the larger GAFR400. The nylon bowl suits applications where a transparent PC bowl is not preferred, while the automatic drain handles unattended or wet lines without manual intervention. This L-type model tops out at 0.4 MPa, so confirm the downstream circuit never needs more than that; the standard S type reaches 0.9 MPa if headroom is required. The included mounting bracket supports the 500 g unit, the fitted circular gauge reads in MPa/psi with PT threads, and the reverse-flow valve is attached as an ordering difference. If lubrication is needed downstream, order the matching GAFC300-08 combination instead. For this lower-pressure unit, the 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 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 GAFR300N08ALK FAQ
The GAFR300N08ALK is a filter & regulator with a 1/4in port, lower-pressure range of 0.15-0.4 MPa (20-58 psi), maximum pressure of 1.0 MPa (145 psi), proof pressure of 1.5 MPa (215 psi), and temperature range of -5 to 70 C. It has a 60 cc drain bowl, weighs 500 g, uses a 40 um element, and includes an automatic drain, nylon bowl, mounting bracket, and fitted gauge.
The GAFR300N08ALK combines both functions in one body, so it filters the air and regulates pressure as a single unit. A GAF filter only removes contaminants, while a GAR regulator only controls pressure. If you also need lubrication downstream, the matching GAFC300-08 combination adds a lubricator, which this unit does not include.
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