Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNWK 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 GAFR300N08ASJNWK
The GAFR300N08ASJNWK is a filter and regulator combined into a single body, so incoming air is cleaned and then set to a steady outlet pressure without needing separate components. This 1/4in unit operates from 0.15 to 0.9 MPa (20-130 psi) and uses a 5 um element to trap fine particles for sensitive equipment.
The nylon bowl holds 60 cc of condensate, and the automatic drain clears it without manual attention. Weighing 500 g, this size class suits panel mounting rather than tubing support, and the pressed-in self-locking knob keeps the set pressure stable against vibration.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNWK |
|---|---|
| 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 | Not included (J) |
| 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 GAFR300N08ASJNWK
| 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). |
| J | No bracket (J) — supplied without the mounting bracket. |
| 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 GAFR300N08ASJNWK Is Used
Precision valve control
Feed a single precision pneumatic valve or a small indexing fixture that needs clean, stable air at a set pressure. The 5 um element protects fine internal passages from particle wear.
Bench test rigs
Supply a lab or assembly bench where a technician adjusts pressure for each test cycle. The self-locking knob holds the setting, and the automatic drain handles condensate without interrupting work.
Compact machine stations
Mount on a panel near a compact machine station that requires filtered air at a regulated pressure. The 500 g weight and 1/4in port fit tight spaces where a separate filter and regulator would not.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNWK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in ports with a 3500 L/min flow envelope plotted at 0.7 MPa inlet, stepping up from the GAFR200's 2000 L/min if you need more capacity. The nylon bowl (N) is a build choice with the same 1.0 MPa max and -5 to 70 C rating as PC or metal, so confirm compatibility for aggressive surroundings. The automatic drain (A) suits unattended or wet lines, while the 5 um element (W) filters finer than the standard 40 um but needs more frequent service. No bracket (J) is included, and no gauge (N) is fitted, so the 1/8in gauge connection is ready if you add one later; the PT thread matches the MPa/psi scale. The reverse-flow valve (K) is fitted as an ordering difference, and if oil is needed downstream, order the GAFC300-08 combination instead. 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 GAFR300N08ASJNWK FAQ
The GAFR300N08ASJNWK works 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). It operates from -5 to 70 C and must not freeze. The drain bowl holds 60 cc, and the unit weighs 500 g.
The N after the port code means no gauge is supplied, leaving a 1/8in gauge connection for adding one later. The J code omits the mounting bracket, so you can use an existing bracket or panel mount. Both options reduce cost when they are not needed.
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