Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJK 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 gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJK
The GAFR300N15ASJK is a filter and pressure regulator combined into a single body, eliminating the need for separate GAF filter and GAR regulator units. This 1/2in port model handles standard pressure ranges of 0.15-0.9 MPa (20-130 psi) and comes with a 40 um element, with the nylon bowl and automatic drain ready for demanding lines.
Its diversion structure spins incoming air to separate liquid water and solid particles into the 60 cc condensate bowl, while the balanced regulator mechanism holds the outlet steady as supply pressure varies. The pressed-in self-locking knob resists set-pressure drift from vibration, making this a stable choice for production equipment.
Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJK |
|---|---|
| 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. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJK
| 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. |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 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 GAFC300-15 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 GAFR300N15ASJK Is Used
CNC spindle air
Feed a clean, regulated 1/2in air supply to a CNC spindle or tool changer, where the automatic drain handles condensate from high-cycling lines without manual attention.
Assembly station header
Mount this unit upstream of a multi-fixture assembly station, supplying filtered air at a steady 0.15-0.9 MPa to pneumatic clamps and actuators.
Test bench supply
Use on a component test bench where the 40 um element and balanced regulator keep test pressure stable, and the 60 cc bowl supports moderate duty cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15ASJK the Right Air-Prep Unit?
Choose this GAFR300 body for 1/2in port applications needing a 3500 L/min flow envelope (at 0.7 MPa inlet) and a 60 cc drain bowl - a step up from the GAFR200's 25 cc bowl for less frequent draining. The nylon bowl offers a build alternative to PC or metal, with the same 1.0 MPa max and -5 to 70 C limits, so confirm compatibility for aggressive environments. This unit has an automatic drain (A), no mounting bracket (J), and the standard S pressure type; the fitted circular gauge reads MPa/psi per the PT thread. The reverse-flow (reflux) valve is attached as an ordering difference, and if oil is needed downstream, order the matching GAFC300-15 combination instead. Note that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan inlet pressure near 1.0 MPa for maximum output.
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 GAFR300N15ASJK 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, drain bowl capacity is 60 cc, and the unit weighs 500 g. The flow curve is plotted to 3500 L/min at 0.7 MPa inlet.
The K indicates a reverse-flow (reflux) valve is fitted to the GAFR300N15ASJK. This is an ordering difference from models without the valve; the catalogue defers its function to a separate page not included in our data.
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