Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNWK 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 GAFR300C15ASNWK
This AirTAC GAFR300C15ASNWK is a filter and regulator combined into one body, so it cleans incoming air and sets a steady outlet pressure without needing a separate filter plus regulator pair. It has a 1/2in port, a 5 um element, and a working range of 0.15-0.9 MPa (20-130 psi), with a metal bowl and an automatic drain.
The unit weighs 500 g and its flow curve is plotted to 3500 L/min at 0.7 MPa inlet, which helps size it for a small machine header. Because the filter and regulator share one body, there are fewer joints to seal and less rail space is consumed than with two separate components.
Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNWK |
|---|---|
| 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 | Included |
| 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 GAFR300C15ASNWK
| 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). |
| (blank) | Mounting bracket included. |
| 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 GAFR300C15ASNWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves that need clean, regulated air at a steady pressure. The 5 um element removes fine particles that could clog small orifices, while the balanced regulator holds the setpoint as line pressure varies.
Machine tool header
Supply a single machine tool with filtered, regulated air through a 1/2in line. The automatic drain clears condensate without operator attention, and the metal bowl suits a fixed installation where the 500 g unit is mounted on a frame or panel.
Test bench air supply
Provide a stable air source for a test bench that cycles actuators or checks components. The self-locking knob resists drift from vibration, keeping the outlet pressure where you set it during a long test sequence.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNWK the Right Air-Prep Unit?
Choose the GAFR300 body when you need a 1/2in port and a 60 cc drain bowl; it sits between the GAFR200 (25 cc bowl, 2000 L/min envelope) and the GAFR400 (100 cc bowl, 7000 L/min envelope). The metal bowl (C) is a build choice, and the automatic drain (A) suits unattended lines, while the 5 um element (W) traps finer particles for sensitive equipment. This model includes the mounting bracket, has no gauge (the 1/8in connection is ready for one), and uses PT threads with the reverse-flow valve (K) fitted as an ordering difference. If oil is needed 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 GAFR300C15ASNWK FAQ
The GAFR300C15ASNWK has a 1/2in port, a working pressure range of 0.15-0.9 MPa (20-130 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g. The unit has a 5 um element and an automatic drain.
The K code indicates the reverse-flow (reflux) valve is fitted. This is an ordering difference from models without the K code. The catalogue does not detail its function in our data, so treat it as a specified option for this part.
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