Airtac GAFR Adjustable Filter Regulator GAFR300N08ASWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ASWK 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 gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASWK
The GAFR300N08ASWK is a filter & regulator with both functions in one body, so it replaces a separate GAF filter and GAR regulator with a single unit that has fewer joints to seal. It uses a diversion structure that spins the air to separate liquid water and trap solid particles, then a balanced regulator holds the outlet steady as supply pressure varies. This model has a 1/4in port, works from 0.15-0.9 MPa (20-130 psi), and comes with a 5 um element for finer filtration.
The nylon bowl holds 60 cc of condensate, and the automatic drain clears it without manual attention. The unit weighs 500 g and includes a circular gauge with MPa/psi scale, plus a pressed-in self-locking knob that resists drift from vibration. A reverse-flow valve is fitted as an ordering difference, and the mounting bracket is included.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ASWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ASWK |
|---|---|
| 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. 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 GAFR300N08ASWK
| 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. |
| (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 GAFR300N08ASWK Is Used
Precision valve control
Feed a precision pneumatic valve with 5 um filtered air at a stable 0.15-0.9 MPa, using the automatic drain to keep the nylon bowl clear in continuous operation.
Single actuator station
Supply a single actuator on a small assembly station with regulated pressure, where the 1/4in port and 500 g body fit compactly with the included bracket.
Wet line protection
Install on a wet compressed-air line where the automatic drain handles frequent condensate, while the 5 um element protects downstream instruments from fine solids.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASWK the Right Air-Prep Unit?
Choose the GAFR300 body for a 1/4in port with a 60 cc drain bowl and a flow envelope plotted to 3500 L/min at 0.7 MPa inlet; step up to GAFR400 for a 3/8in or 1/2in port with a 100 cc bowl and a 7000 L/min envelope. The nylon bowl is a build choice, and the automatic drain suits unattended lines, while the 5 um element traps finer particles than the standard 40 um for precision valves. The included bracket mounts the 500 g unit securely, and the PT thread gives an MPa/psi gauge scale; the reverse-flow valve is fitted per the K code. If the line needs oil downstream, order the matching GAFC300-08 combination instead. Max supply 1.0 MPa 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 GAFR300N08ASWK FAQ
The GAFR300N08ASWK is a filter & regulator with a 1/4in port, working range 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 60 cc drain bowl, and 500 g weight. It has a 5 um element, automatic drain, nylon bowl, fitted gauge, and reverse-flow valve.
The automatic drain (A code) clears condensate from the 60 cc bowl without manual intervention, making it suitable for unattended or wet lines. This contrasts with blank drain models that ship with both semi-auto and manual drain options.
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