Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJNWK 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 materialMetal
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJNWK
The GAFR300C15ASJNWK is a filter & regulator with both functions sharing one body, so a single unit cleans the air and holds a steady outlet pressure. This 1/2in version uses a metal bowl, a 5 um element, and an automatic drain, with a working range of 0.15-0.9 MPa (20-130 psi).
A pressed-in self-locking knob resists set-pressure drift from vibration, while the balanced mechanism keeps the outlet stable as supply pressure varies. The diversion structure spins incoming air to separate liquid water and trap solid particles into the 60 cc drain bowl, and this model carries no gauge and no mounting bracket.
Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJNWK |
|---|---|
| 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 | Metal |
| 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 GAFR300C15ASJNWK
| GAFR300 | GA300 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. 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. |
| 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 GAFR300C15ASJNWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a machining center with the 5 um element filtering fine particles that could clog orifices, while the balanced regulator keeps the set pressure stable.
Unattended machine station
Mount this unit on a multi-station assembly machine where the automatic drain clears condensate without manual checks, and the metal bowl handles the environment without needing frequent visual inspection.
Panel-mounted control cabinet
Install in a control cabinet where the no-bracket design fits existing panel holes, and the 1/2in port feeds several actuators from a single regulated supply point.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJNWK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in ports with a 60 cc drain bowl and a flow curve plotted to 3500 L/min at 0.7 MPa inlet, stepping down to the GAFR200 for 1/4in lines or up to the GAFR400 for 3/8in and 1/2in with a 100 cc bowl. The metal bowl suits demanding environments, the automatic drain handles unattended operation, and the 5 um element traps finer particles than the standard 40 um for precision valves or instrument air. This model omits the bracket for panel mounting and has no gauge, so the 1/8in gauge connection is ready if one is added later; the PT thread carries an MPa/psi scale, and the reverse-flow valve is fitted as an ordering difference. If the line needs oil downstream, order the matching GAFC300-15 combination instead, since this unit does not lubricate. The 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan a supply near 1.0 MPa for a 0.9 MPa setpoint.
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 GAFR300C15ASJNWK FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), max pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), temperature range is -5 to 70 C. The drain bowl holds 60 cc, the unit weighs 500 g, and the flow curve is plotted to 3500 L/min at 0.7 MPa inlet.
The N after the port code means no gauge is supplied, so the 1/8in gauge connection is left open for adding one later. The J code omits the mounting bracket, which suits panel-mount installations or existing bracket setups where the included bracket would be redundant.
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