Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJNW 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 1/2" 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 size1/2"
- 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 GAFR300N15ASJNW
The GAFR300N15ASJNW is a genuine AirTAC filter & regulator combining both functions in a single body, so it replaces a separate GAF filter plus GAR regulator. This 1/2in port unit weighs 500 g and uses a 5 um element to trap fine particles, with a nylon bowl for the 60 cc condensate capacity.
It delivers a standard pressure range of 0.15-0.9 MPa (20-130 psi) and includes an automatic drain for unattended operation. The balanced regulator holds the set outlet pressure steady as supply varies, and the pressed-in self-locking knob resists drift from vibration. No gauge is fitted, so the 1/8in gauge connection is available if you add one later.
Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJNW |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (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 GAFR300N15ASJNW
| 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). |
| 15 | Port size 1/2". 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 GAFC300-15 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 · 1/2" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a 1/2in manifold where the 5 um element protects fine internal passages from particle wear.
Machine tool air supply
Supply a CNC machine's tool-changing mechanism with filtered, regulated air, using the automatic drain to handle condensate from a wet compressor line.
Test bench setup
Power a laboratory test fixture that cycles actuators at varying loads, relying on the balanced regulator to hold the set pressure as the supply fluctuates.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJNW the Right Air-Prep Unit?
Choose this GAFR300 body for 1/2in porting with a flow curve plotted to 3500 L/min at 0.7 MPa inlet, a step up from the GAFR200's 2000 L/min envelope. The nylon bowl suits applications where a transparent PC bowl is not preferred, while the 5 um element captures finer particles than the standard 40 um grade, though it will need more frequent service. The automatic drain handles condensate without manual intervention, and the J code means no mounting bracket is included, so plan for panel mounting or an existing bracket. The PT thread carries an MPa/psi gauge scale, and since no gauge ships with this model, the 1/8in connection is ready for an add-on. If the line needs lubrication downstream, order the matching GAFC300-15 combination instead. The 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 (1/2" 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 GAFC300-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJNW FAQ
It is a filter & regulator with a 1/2in port, standard pressure 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, drain bowl 60 cc, and weight 500 g. The 5 um element and automatic drain are fitted, with no gauge and no bracket included.
The N after the port code means no gauge is supplied, leaving the 1/8in gauge connection open for an add-on if you need to read the set pressure. The J code omits the mounting bracket, which suits panel-mount installations or setups where you already have a bracket. Both options reduce cost when the standard accessories are not needed.
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