Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJN 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 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 size1/2"
- 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 GAFR300N15ASJN
The GAFR300N15ASJN is a filter & regulator combining both functions in a single body. It spins incoming air to separate liquid water and trap solid particles, then a balanced regulator holds the outlet steady as supply pressure varies. This model has a 1/2in port and a 60 cc nylon condensate bowl.
Rated for 0.15-0.9 MPa (20-130 psi) with a 40 um element, this unit weighs 500 g. The pressed-in self-locking knob resists set-pressure drift from vibration, making it suitable for machinery with constant movement. No lubricator is fitted or available in this body style.
Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJN |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (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 | 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 GAFR300N15ASJN
| 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. |
| (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 GAFC300-15 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 GAFR300N15ASJN Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a packaging line. The 40 um element protects valve internals while the balanced regulator keeps pilot pressure stable despite supply fluctuations from other equipment.
Machine tool air supply
Supply a CNC machine's air chuck and tool changer. The 1/2in port delivers adequate flow for rapid actuation, and the automatic drain removes condensate without stopping production for manual draining.
Test bench instrumentation
Power a pneumatic test fixture with multiple cylinders. The 500 g body mounts to a panel via the bracket holes, and the 60 cc bowl provides reasonable capacity between scheduled maintenance checks.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJN the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in porting with a 60 cc bowl, stepping up from the GAFR200's 25 cc for longer intervals between drains. The nylon bowl (N) suits applications where a transparent PC bowl might be a concern, though all materials share the same 1.0 MPa max and -5 to 70 C limits. The automatic drain (A) handles unattended operation or wet lines without manual intervention. This unit ships without a bracket (J) for panel mounting, and without a gauge (N) - the 1/8in gauge connection is ready for a field-installed unit. The standard S type covers 0.15-0.9 MPa, and the PT thread gives an MPa/psi gauge scale. For lines needing oil downstream, order the GAFC300-15 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 (1/2" 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 GAFR300N15ASJN FAQ
Working pressure is 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi). Temperature range is -5 to 70 C (must not freeze). The drain bowl holds 60 cc and the unit weighs 500 g. It has a 1/2in port, 40 um element, automatic drain, and no gauge.
The J code removes the mounting bracket for installations using existing panel mounts or machine frames. The N code (after the port) omits the gauge - the 1/8in gauge connection remains available for field installation. This suits buyers who already have gauges or prefer a separate panel-mounted pressure display.
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