Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNW 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 GAFR300N08ASNW
The GAFR300N08ASNW is a filter and regulator combined into a single body, handling both air preparation steps without needing separate units. It spins incoming air to separate liquid water and solid particles, then delivers a steady outlet pressure through its balanced regulator mechanism. This model has a 1/4in port, a nylon bowl, and a 5 um element for finer filtration.
Its working range is 0.15-0.9 MPa (20-130 psi), with a maximum supply pressure of 1.0 MPa (145 psi). The unit weighs 500 g and has a 60 cc condensate bowl. Because the filter and regulator share one housing, there are fewer potential leak points compared to a two-piece setup, and it takes up less space on a rail.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNW |
|---|---|
| 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 GAFR300N08ASNW
| 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. |
| (blank) | No reverse-flow valve. |
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 GAFR300N08ASNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly machine. The 5 um element protects fine internal passages, and the automatic drain keeps the supply clean during long shifts.
Instrument air for test rigs
Supply clean, regulated air to a laboratory test fixture that cycles frequently. The 60 cc bowl handles typical condensate from a small compressor, and the balanced regulator holds set pressure as shop air demand fluctuates.
Single-station automation
Protect a dedicated pick-and-place station with one actuator and a few sensors. This 1/4in unit is sized for the flow demand of a single machine section, keeping installation compact.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASNW the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in or 3/8in port lines; it is the mid-size option between the smaller GAFR200 and the larger GAFR400. The nylon bowl (N) is a build choice, while the automatic drain (A) handles condensate without manual intervention, ideal for wet or unattended lines. The 5 um element (W) traps finer particles than the standard 40 um, suitable for precision equipment but requiring more frequent service. The mounting bracket is included, and no gauge is fitted (N), so the 1/8in gauge connection is available if you add one later. If the line needs lubrication downstream, order the matching GAFC300-08 combination instead. A 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 GAFR300N08ASNW FAQ
The GAFR300N08ASNW is a filter and regulator with a 1/4in port, working pressure range of 0.15-0.9 MPa (20-130 psi), and a maximum pressure of 1.0 MPa (145 psi). Proof pressure is 1.5 MPa (215 psi), and the operating temperature range is -5 to 70 C. It has a 60 cc drain bowl, weighs 500 g, and uses a 5 um filter element.
The N after the port code means no gauge is supplied with this unit. The gauge connection on the GAFR300 body is 1/8in, so you can add a compatible pressure gauge later if you need to read the outlet pressure directly. Without a gauge, the set pressure cannot be monitored visually.
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