Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNWK 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 GAFR300N08ALNWK
The GAFR300N08ALNWK is a filter and regulator combined into a single body, so incoming air is first spun to separate liquid water and solid particles, then regulated to a steady outlet pressure. This unit has no lubricator and only one bowl - the 60 cc condensate bowl that collects what the diversion filter removes.
This model uses a 1/4in port, a 5 um element for finer filtration, and a lower-pressure range of 0.15-0.4 MPa (20-58 psi). The nylon bowl and automatic drain suit installations where regular manual draining is impractical, and the included mounting bracket lets you secure the 500 g body to a panel or frame rather than supporting it from the tubing.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNWK |
|---|---|
| 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 GAFR300N08ALNWK
| 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. |
| 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 GAFR300N08ALNWK Is Used
Precision valve control
Feed a single precision pneumatic valve or a small instrument air circuit where the 5 um element protects sensitive internals and the lower pressure range prevents over-pressurization.
Compact machine station
Mount this 500 g unit on a small assembly machine or test bench where 1/4in ports match the existing piping and the automatic drain reduces maintenance stops.
Low-pressure test rig
Use the 0.15-0.4 MPa range for delicate testing or calibration setups that must not exceed 0.4 MPa, with the nylon bowl suited to the build environment.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ALNWK the Right Air-Prep Unit?
Choose this GAFR300 when 1/4in ports and a 500 g body match your line, and when the lower-pressure range of 0.15-0.4 MPa (20-58 psi) is sufficient - if the machine may ever need more than 0.4 MPa, select the standard S type instead. The 5 um element traps finer particles than the standard 40 um grade, making it a better fit for precision valves or instrument air, though it will need more frequent service. The automatic drain handles condensate without operator attention, the nylon bowl is a build choice with the same 1.0 MPa max pressure as PC or metal, and the included bracket simplifies mounting. This unit has no gauge fitted, so the 1/8in gauge connection is ready if you add one later, and the PT thread carries the MPa/psi scale. The reverse-flow (reflux) valve is fitted as an ordering difference. If your line needs lubrication 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 this unit's 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 GAFR300N08ALNWK FAQ
Working pressure range is 0.15-0.4 MPa (20-58 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 and must not freeze. The drain bowl holds 60 cc, the unit weighs 500 g, and it uses a 5 um filter element.
The L type code limits regulation to 0.15-0.4 MPa (20-58 psi), which suits applications that must never exceed that ceiling. The N after the port means no gauge is supplied; the 1/8in gauge connection is available if you add one later. The automatic drain and nylon bowl are separate options that remain active.
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