Airtac GAFR Adjustable Filter Regulator GAFR300N08ASN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ASN 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 - 0.9 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 grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASN
The GAFR300N08ASN is a filter and regulator combined into a single body, handling both filtration and pressure control without needing separate units. It uses a 1/4in port, works across 0.15-0.9 MPa (20-130 psi), and comes with a 40 um element.
This model features a nylon bowl and an automatic drain, with a 60 cc condensate capacity. Weighing 500 g, it fits neatly into compact machine builds while the integrated design reduces potential leak points compared to using separate filter and regulator components.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ASN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ASN |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 40 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 GAFR300N08ASN
| 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. |
| (blank) | Filtering grade 40 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 GAFR300N08ASN Is Used
Precision Jig Setup
Feed a single pneumatic clamp or positioning jig on an assembly bench. The 1/4in port and 500 g weight suit small fixtures where space is tight and stable pressure matters.
Test Bench Air Supply
Provide clean, regulated air to a prototype test station. The automatic drain keeps the bowl from filling during long unattended tests, while the 40 um element protects sensitive test valves.
Compact Machine Build
Integrate into a small automation cell where a single body saves rail space. The nylon bowl and included bracket simplify mounting, and the 60 cc bowl handles typical condensate between maintenance checks.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASN the Right Air-Prep Unit?
Choose this GAFR300 when your line needs 1/4in connections and the 60 cc bowl suits your maintenance schedule. The nylon bowl offers a different build option compared to PC or metal, though all share the same 1.0 MPa max pressure rating. The automatic drain handles condensate without manual intervention, ideal for hard-to-reach spots. A mounting bracket is included, and the 40 um element handles general workshop air. If finer filtration is needed later, the W option provides 5 um. The PT thread with MPa/psi gauge scale matches common regional fittings. For lines requiring downstream lubrication, the matching GAFC300-08 combination adds that function. The 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan inlet pressure near the maximum for full output.
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 GAFR300N08ASN FAQ
The GAFR300N08ASN operates from 0.15 to 0.9 MPa (20-130 psi), with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 60 cc and the unit weighs 500 g. It uses a 40 um element and has an automatic drain.
The N code after the port means no gauge is supplied. The gauge connection on the GAFR300 body is 1/8in, so you can add a compatible gauge later if you need to read outlet pressure directly. Without one, you cannot monitor the set pressure at the unit.
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