Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNW 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 GAFR300N08ASJNW
The GAFR300N08ASJNW is a genuine AirTAC filter & regulator that combines both functions in a single body, eliminating the need for separate filter and regulator units. This 1/4in port model handles 0.15-0.9 MPa (20-130 psi) and uses a 5 um element to trap fine particles for sensitive equipment.
Its nylon bowl and automatic drain make it suitable for unattended operation, while the 60 cc condensate bowl holds enough liquid to reduce maintenance frequency. The unit weighs 500 g and features a balanced regulator that maintains steady outlet pressure as supply varies, with a self-locking knob that resists vibration-induced drift.
Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNW |
|---|---|
| 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 GAFR300N08ASJNW
| 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. |
| (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 GAFR300N08ASJNW Is Used
Precision valve control
Feed a 5 um filtered, regulated air supply to precision pneumatic valves that require clean, stable pressure for consistent actuation in automated assembly equipment.
Machine tool circuits
Mount on a small machine tool to provide filtered, regulated air to clamping fixtures and work-holding devices, with the automatic drain handling condensate from wet shop air.
Instrument air supply
Supply clean, regulated air to panel-mounted instruments and sensors where the 5 um element removes fine particles that could clog orifices or affect readings.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N08ASJNW the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in ports where a 500 g unit with a 60 cc drain bowl fits the space. The nylon bowl (N) offers a different build option than PC or metal, though all share the same 1.0 MPa max and -5 to 70 C rating. This model has an automatic drain (A) for wet lines or unattended service, and the 5 um element (W) suits precision valves or instrument air. No bracket (J) is included, so plan for panel mounting or an existing bracket. No gauge (N) is fitted, but the 1/8in gauge connection allows adding one later. The PT thread with MPa/psi scale matches standard installations. If lubrication is needed downstream, order the matching GAFC300-08 combination instead. Note that 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 GAFR300N08ASJNW FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C. The drain bowl holds 60 cc and the unit weighs 500 g. It has a 1/4in port, 5 um element, and automatic drain.
The J code omits the mounting bracket for installations using existing brackets or panel mounts. The N code (after the port) means no gauge is supplied, though the 1/8in gauge connection allows adding one. This configuration reduces cost when a gauge is not needed or is mounted remotely.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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