Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJW 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 gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJW
The GAFR300C15ASJW is a filter and regulator combined into a single body, handling both filtration and pressure control in one compact unit. It works with a 1/2in port, operates from 0.15 to 0.9 MPa (20-130 psi), and comes with a 5 um filter element for finer particle removal.
This model features a metal bowl, an automatic drain, and a circular gauge with an MPa/psi scale. The integrated design replaces separate filter and regulator units, reducing potential leak points and saving space on the rail. The 60 cc condensate bowl collects water and solids separated by the diversion structure, while the 500 g weight indicates a unit that needs proper mounting support.
Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJW |
|---|---|
| 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. 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 GAFR300C15ASJW
| 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. |
| (blank) | Circular pressure gauge fitted. |
| 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 GAFR300C15ASJW Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require cleaner air than standard 40 um filtration. The 5 um element reduces particle ingress, while the balanced regulator holds the set pressure steady as line pressure fluctuates.
Machine tool air supply
Supply a single machining center with regulated air at a consistent pressure. The 1/2in port matches common machine tool inlets, and the automatic drain keeps the 60 cc bowl from overflowing during extended production runs.
Test bench setup
Build a test bench that needs a stable, adjustable air supply for calibration fixtures. The integrated filter and regulator saves rail space, and the visible gauge with magnifier allows precise pressure setting and monitoring.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C15ASJW the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in port applications needing a 60 cc drain bowl and a flow envelope plotted to 3500 L/min at 0.7 MPa inlet. The metal bowl (C) offers a different build option compared to PC or nylon, with the same 1.0 MPa maximum pressure rating. The automatic drain (A) handles condensate removal without manual intervention, ideal for wet or unattended lines. This model has no mounting bracket (J), so plan for panel mounting or use an existing bracket. The 5 um element (W) traps finer particles than the standard 40 um, suitable for precision equipment. The PT thread comes with an MPa/psi gauge scale. If oil is needed downstream, order the matching GAFC300-15 combination instead. Remember that 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 GAFR300C15ASJW FAQ
The GAFR300C15ASJW operates from 0.15 to 0.9 MPa (20-130 psi) with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). It works in temperatures from -5 to 70 C and must not freeze. The unit has a 60 cc drain bowl and weighs 500 g. It uses a 5 um filter element and has a 1/2in port.
The automatic drain (A) expels condensate from the 60 cc bowl without manual intervention. This is different from the semi-auto+manual drain option, which requires an operator to open the drain valve. The automatic version suits wet air lines or installations where regular manual draining is impractical.
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